support custom Redis TLS certs

[vlinkz]

Is your feature request related to a problem? Please describe.
I would like to use Redis with https within a vpc, but need a way to add a custom cert used by my redis instance.

Describe the solution you'd like
Add support for REDIS_CA_CERT env var.

Describe alternatives you've considered
I could either not use TLS (doesn't matter as much within a vpc), or use some custom hook to modify the ca certificates of the container.

Additional context
Specifically I'm trying to use helm to deploy ld-relay

[keelerm84]

Thank you for bringing this request to our attention. While I cannot provide a definitive timeline, I will try to look into this within the next couple of weeks. I will post back here with any progress I've been able to make.

Tracking internally as SDK-1527.