Update traefik Docker tag to v2.4

This PR contains the following updates:

Package	Update	Change
traefik	minor	`2.3` -> `2.4`

Release Notes

containous/traefik

### [`v2.4`](https://togithub.com/containous/traefik/blob/master/CHANGELOG.md#v240-rc1-httpsgithubcomtraefiktraefiktreev240-rc1-2020-12-16) [All Commits](https://togithub.com/traefik/traefik/compare/v2.3.0-rc1...v2.4.0-rc1) **Enhancements:** - **[acme]** New HTTP and TLS challenges implementations ([#7458](https://togithub.com/traefik/traefik/pull/7458) by [ldez](https://togithub.com/ldez)) - **[acme]** Add external account binding support ([#7599](https://togithub.com/traefik/traefik/pull/7599) by [ldez](https://togithub.com/ldez)) - **[authentication,middleware]** Middlewares: add forwardAuth.authResponseHeadersRegex ([#7449](https://togithub.com/traefik/traefik/pull/7449) by [iamolegga](https://togithub.com/iamolegga)) - **[authentication,middleware]** Filter ForwardAuth request headers ([#7226](https://togithub.com/traefik/traefik/pull/7226) by [nkonev](https://togithub.com/nkonev)) - **[k8s,k8s/ingress]** Update more than one LoadBalancer IP ([#6951](https://togithub.com/traefik/traefik/pull/6951) by [iameli](https://togithub.com/iameli)) - **[k8s,k8s/ingress]** Set kubernetes client User-Agent to something meaningful ([#7392](https://togithub.com/traefik/traefik/pull/7392) by [sylr](https://togithub.com/sylr)) - **[k8s]** Add Kubernetes Gateway Provider ([#7416](https://togithub.com/traefik/traefik/pull/7416) by [rtribotte](https://togithub.com/rtribotte)) - **[k8s]** Bump k8s client to v0.19.2 ([#7402](https://togithub.com/traefik/traefik/pull/7402) by [rtribotte](https://togithub.com/rtribotte)) - **[kv]** Allows multi-level KV prefixes ([#6664](https://togithub.com/traefik/traefik/pull/6664) by [niki-timofe](https://togithub.com/niki-timofe)) - **[logs,middleware,docker]** Support configuring a HTTP client timeout in the Docker provider ([#7094](https://togithub.com/traefik/traefik/pull/7094) by [sirlatrom](https://togithub.com/sirlatrom)) - **[marathon]** Extend marathon port discovery to allow port names as identifier ([#7359](https://togithub.com/traefik/traefik/pull/7359) by [basert](https://togithub.com/basert)) - **[metrics]** Re-add server up metrics ([#6461](https://togithub.com/traefik/traefik/pull/6461) by [coder-hugo](https://togithub.com/coder-hugo)) - **[middleware]** Feature: Exponential Backoff in Retry Middleware ([#7460](https://togithub.com/traefik/traefik/pull/7460) by [danieladams456](https://togithub.com/danieladams456)) - **[middleware]** Allow to use regular expressions for `AccessControlAllowOriginList` ([#6881](https://togithub.com/traefik/traefik/pull/6881) by [jodosha](https://togithub.com/jodosha)) - **[pilot]** Enable stats collection when pilot is enabled ([#7483](https://togithub.com/traefik/traefik/pull/7483) by [mmatur](https://togithub.com/mmatur)) - **[pilot]** Send anonymized dynamic configuration to Pilot ([#7615](https://togithub.com/traefik/traefik/pull/7615) by [jspdown](https://togithub.com/jspdown)) - **[server]** Added support for tcp proxyProtocol v1&v2 to backend ([#7320](https://togithub.com/traefik/traefik/pull/7320) by [mschneider82](https://togithub.com/mschneider82)) - **[service,tls]** Add ServersTransport on services ([#7203](https://togithub.com/traefik/traefik/pull/7203) by [juliens](https://togithub.com/juliens)) - **[webui]** Display Proxy Protocol version for backend services in web dashboard ([#7602](https://togithub.com/traefik/traefik/pull/7602) by [95ulisse](https://togithub.com/95ulisse)) - Improve setup readability ([#7604](https://togithub.com/traefik/traefik/pull/7604) by [juliens](https://togithub.com/juliens)) **Bug fixes:** - **[docker]** Fix default value of docker client timeout ([#7345](https://togithub.com/traefik/traefik/pull/7345) by [kevinpollet](https://togithub.com/kevinpollet)) - **[middleware,k8s/crd]** Add AccessControlAllowOriginListRegex field to deepcopy ([#7512](https://togithub.com/traefik/traefik/pull/7512) by [kevinpollet](https://togithub.com/kevinpollet)) **Documentation:** - **[kv]** KV doc reference ([#7415](https://togithub.com/traefik/traefik/pull/7415) by [rtribotte](https://togithub.com/rtribotte)) - Add jspdown to maintainers ([#7671](https://togithub.com/traefik/traefik/pull/7671) by [emilevauge](https://togithub.com/emilevauge)) - Add kevinpollet to maintainers ([#7464](https://togithub.com/traefik/traefik/pull/7464) by [SantoDE](https://togithub.com/SantoDE)) - Add security policies ([#7110](https://togithub.com/traefik/traefik/pull/7110) by [ldez](https://togithub.com/ldez)) **Misc:** - Merge current v2.3 branch into master ([#7677](https://togithub.com/traefik/traefik/pull/7677) by [rtribotte](https://togithub.com/rtribotte)) - Merge current v2.3 branch into master ([#7670](https://togithub.com/traefik/traefik/pull/7670) by [rtribotte](https://togithub.com/rtribotte)) - Merge current v2.3 branch into master ([#7653](https://togithub.com/traefik/traefik/pull/7653) by [kevinpollet](https://togithub.com/kevinpollet)) - Merge current v2.3 branch into master ([#7574](https://togithub.com/traefik/traefik/pull/7574) by [kevinpollet](https://togithub.com/kevinpollet)) - Merge current v2.3 branch into master ([#7529](https://togithub.com/traefik/traefik/pull/7529) by [ldez](https://togithub.com/ldez)) - Merge current v2.3 branch into master ([#7472](https://togithub.com/traefik/traefik/pull/7472) by [jbdoumenjou](https://togithub.com/jbdoumenjou)) - Merge current v2.3 branch into master ([#7453](https://togithub.com/traefik/traefik/pull/7453) by [jbdoumenjou](https://togithub.com/jbdoumenjou)) - Merge current v2.3 branch into master ([#7405](https://togithub.com/traefik/traefik/pull/7405) by [ldez](https://togithub.com/ldez)) - Merge current v2.3 branch into master ([#7401](https://togithub.com/traefik/traefik/pull/7401) by [rtribotte](https://togithub.com/rtribotte)) - Merge current v2.3 branch into master ([#7346](https://togithub.com/traefik/traefik/pull/7346) by [ldez](https://togithub.com/ldez)) - Merge current v2.3 branch into master ([#7335](https://togithub.com/traefik/traefik/pull/7335) by [ldez](https://togithub.com/ldez)) - Merge current v2.3 branch into master ([#7299](https://togithub.com/traefik/traefik/pull/7299) by [ldez](https://togithub.com/ldez)) - Merge current v2.3 branch into master ([#7263](https://togithub.com/traefik/traefik/pull/7263) by [ldez](https://togithub.com/ldez)) - Merge current v2.3 branch into master ([#7215](https://togithub.com/traefik/traefik/pull/7215) by [ldez](https://togithub.com/ldez)) - Merge current v2.3 branch into master ([#7122](https://togithub.com/traefik/traefik/pull/7122) by [ldez](https://togithub.com/ldez)) ### [`v2.4`](https://togithub.com/containous/traefik/blob/master/CHANGELOG.md#v240-rc1-httpsgithubcomtraefiktraefiktreev240-rc1-2020-12-16) [All Commits](https://togithub.com/traefik/traefik/compare/v2.3.0-rc1...v2.4.0-rc1) **Enhancements:** - **[acme]** New HTTP and TLS challenges implementations ([#7458](https://togithub.com/traefik/traefik/pull/7458) by [ldez](https://togithub.com/ldez)) - **[acme]** Add external account binding support ([#7599](https://togithub.com/traefik/traefik/pull/7599) by [ldez](https://togithub.com/ldez)) - **[authentication,middleware]** Middlewares: add forwardAuth.authResponseHeadersRegex ([#7449](https://togithub.com/traefik/traefik/pull/7449) by [iamolegga](https://togithub.com/iamolegga)) - **[authentication,middleware]** Filter ForwardAuth request headers ([#7226](https://togithub.com/traefik/traefik/pull/7226) by [nkonev](https://togithub.com/nkonev)) - **[k8s,k8s/ingress]** Update more than one LoadBalancer IP ([#6951](https://togithub.com/traefik/traefik/pull/6951) by [iameli](https://togithub.com/iameli)) - **[k8s,k8s/ingress]** Set kubernetes client User-Agent to something meaningful ([#7392](https://togithub.com/traefik/traefik/pull/7392) by [sylr](https://togithub.com/sylr)) - **[k8s]** Add Kubernetes Gateway Provider ([#7416](https://togithub.com/traefik/traefik/pull/7416) by [rtribotte](https://togithub.com/rtribotte)) - **[k8s]** Bump k8s client to v0.19.2 ([#7402](https://togithub.com/traefik/traefik/pull/7402) by [rtribotte](https://togithub.com/rtribotte)) - **[kv]** Allows multi-level KV prefixes ([#6664](https://togithub.com/traefik/traefik/pull/6664) by [niki-timofe](https://togithub.com/niki-timofe)) - **[logs,middleware,docker]** Support configuring a HTTP client timeout in the Docker provider ([#7094](https://togithub.com/traefik/traefik/pull/7094) by [sirlatrom](https://togithub.com/sirlatrom)) - **[marathon]** Extend marathon port discovery to allow port names as identifier ([#7359](https://togithub.com/traefik/traefik/pull/7359) by [basert](https://togithub.com/basert)) - **[metrics]** Re-add server up metrics ([#6461](https://togithub.com/traefik/traefik/pull/6461) by [coder-hugo](https://togithub.com/coder-hugo)) - **[middleware]** Feature: Exponential Backoff in Retry Middleware ([#7460](https://togithub.com/traefik/traefik/pull/7460) by [danieladams456](https://togithub.com/danieladams456)) - **[middleware]** Allow to use regular expressions for `AccessControlAllowOriginList` ([#6881](https://togithub.com/traefik/traefik/pull/6881) by [jodosha](https://togithub.com/jodosha)) - **[pilot]** Enable stats collection when pilot is enabled ([#7483](https://togithub.com/traefik/traefik/pull/7483) by [mmatur](https://togithub.com/mmatur)) - **[pilot]** Send anonymized dynamic configuration to Pilot ([#7615](https://togithub.com/traefik/traefik/pull/7615) by [jspdown](https://togithub.com/jspdown)) - **[server]** Added support for tcp proxyProtocol v1&v2 to backend ([#7320](https://togithub.com/traefik/traefik/pull/7320) by [mschneider82](https://togithub.com/mschneider82)) - **[service,tls]** Add ServersTransport on services ([#7203](https://togithub.com/traefik/traefik/pull/7203) by [juliens](https://togithub.com/juliens)) - **[webui]** Display Proxy Protocol version for backend services in web dashboard ([#7602](https://togithub.com/traefik/traefik/pull/7602) by [95ulisse](https://togithub.com/95ulisse)) - Improve setup readability ([#7604](https://togithub.com/traefik/traefik/pull/7604) by [juliens](https://togithub.com/juliens)) **Bug fixes:** - **[docker]** Fix default value of docker client timeout ([#7345](https://togithub.com/traefik/traefik/pull/7345) by [kevinpollet](https://togithub.com/kevinpollet)) - **[middleware,k8s/crd]** Add AccessControlAllowOriginListRegex field to deepcopy ([#7512](https://togithub.com/traefik/traefik/pull/7512) by [kevinpollet](https://togithub.com/kevinpollet)) **Documentation:** - **[kv]** KV doc reference ([#7415](https://togithub.com/traefik/traefik/pull/7415) by [rtribotte](https://togithub.com/rtribotte)) - Add jspdown to maintainers ([#7671](https://togithub.com/traefik/traefik/pull/7671) by [emilevauge](https://togithub.com/emilevauge)) - Add kevinpollet to maintainers ([#7464](https://togithub.com/traefik/traefik/pull/7464) by [SantoDE](https://togithub.com/SantoDE)) - Add security policies ([#7110](https://togithub.com/traefik/traefik/pull/7110) by [ldez](https://togithub.com/ldez)) **Misc:** - Merge current v2.3 branch into master ([#7677](https://togithub.com/traefik/traefik/pull/7677) by [rtribotte](https://togithub.com/rtribotte)) - Merge current v2.3 branch into master ([#7670](https://togithub.com/traefik/traefik/pull/7670) by [rtribotte](https://togithub.com/rtribotte)) - Merge current v2.3 branch into master ([#7653](https://togithub.com/traefik/traefik/pull/7653) by [kevinpollet](https://togithub.com/kevinpollet)) - Merge current v2.3 branch into master ([#7574](https://togithub.com/traefik/traefik/pull/7574) by [kevinpollet](https://togithub.com/kevinpollet)) - Merge current v2.3 branch into master ([#7529](https://togithub.com/traefik/traefik/pull/7529) by [ldez](https://togithub.com/ldez)) - Merge current v2.3 branch into master ([#7472](https://togithub.com/traefik/traefik/pull/7472) by [jbdoumenjou](https://togithub.com/jbdoumenjou)) - Merge current v2.3 branch into master ([#7453](https://togithub.com/traefik/traefik/pull/7453) by [jbdoumenjou](https://togithub.com/jbdoumenjou)) - Merge current v2.3 branch into master ([#7405](https://togithub.com/traefik/traefik/pull/7405) by [ldez](https://togithub.com/ldez)) - Merge current v2.3 branch into master ([#7401](https://togithub.com/traefik/traefik/pull/7401) by [rtribotte](https://togithub.com/rtribotte)) - Merge current v2.3 branch into master ([#7346](https://togithub.com/traefik/traefik/pull/7346) by [ldez](https://togithub.com/ldez)) - Merge current v2.3 branch into master ([#7335](https://togithub.com/traefik/traefik/pull/7335) by [ldez](https://togithub.com/ldez)) - Merge current v2.3 branch into master ([#7299](https://togithub.com/traefik/traefik/pull/7299) by [ldez](https://togithub.com/ldez)) - Merge current v2.3 branch into master ([#7263](https://togithub.com/traefik/traefik/pull/7263) by [ldez](https://togithub.com/ldez)) - Merge current v2.3 branch into master ([#7215](https://togithub.com/traefik/traefik/pull/7215) by [ldez](https://togithub.com/ldez)) - Merge current v2.3 branch into master ([#7122](https://togithub.com/traefik/traefik/pull/7122) by [ldez](https://togithub.com/ldez))

Renovate configuration

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dniel / traefik-forward-auth0

Update traefik Docker tag to v2.4 #288

Release Notes

Renovate configuration