Easy deploy to Cloud/Production Epic

[bajtos]

We should make it easy to deploy LoopBack4 applications to most common production types:

• IBM Cloud & API Connect
• Twelve-factor platforms (e.g. Heroku), where configuration is read from environment variables (e.g. PORT, database connection strings, etc.)
• Docker and Kubernetes
• http://istio.io/
• Enable LB apps to be Cloud Native

Re-posting from https://github.com/strongloop/loopback-next/issues/1054:

• How do I modify behavior of my LoopBack4 application in production, e.g. modify error responses to not leak any sensitive data?
• How do I configure database connection strings, access credentials, port number to listen on, etc. for my LoopBack4 application?
• How can I secure my application? (This overlaps with the existing epic of Authentication/authorization/security.)
• How do I monitor behavior of my LoopBack application in production, what useful insights can I get on top of usual low-level Node.js metrics?
• How can I upgrade my applications with zero downtime? Is there anything special needed to enable blue/green deployments?
• Where can I find logs from my app? How can I produce my own log entries from my custom code (e.g. controller methods)?

[stale[bot]]

This issue has been marked stale because it has not seen activity within six months. If you believe this to be in error, please contact one of the code owners, listed in the CODEOWNERS file at the top-level of this repository. This issue will be closed within 30 days of being stale.

[virkt25]

not-stale

[bajtos]

Related PRs:

• improve states and add shutdown hooks for applications #4145
• add integration with winston and fluentd logging #4117
• add a new package to enable open tracing #3389
• handle http keepalive connections upon application.stop() #4146