Allow useTLS=false for static Upstreams in port 443 (opaque TCP transport)

[jmunozro]

Is your feature request related to a problem? Please describe. A requirement we saw in customers is the possibility to use gloo as a transparent proxy, meaning the traffic will be just opaque. One practical case to avoid having to inspect TLS at all. TLS will be performed end-to-end, but shouldn't require Gloo's involvement.

Describe the solution you'd like useTLS should not be forced true for port 443, that should be a default setting not an obligation

Additional context

• https://docs.solo.io/gloo-edge/latest/reference/api/github.com/solo-io/gloo/projects/gloo/api/v1/options/static/static.proto.sk/
• https://github.com/solo-io/gloo/blob/85170eec5d5268490a43d9d96ec776549ef4bd25/projects/gloo/pkg/plugins/static/plugin.go#L124-L125

[chrisgaun]

@jmunozro please add current workaround

[jmunozro]

Current workaround: deploying a simple socat-based proxy that just forwards a different port to 443 as a workaround, so I can use a different port number in Gloo

[github-actions[bot]]

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