Add persistent tentant registry

[TomasMonkevic]

What is done:

1. Wired up Redis
2. Implemented logic of registry repo implementation selection based on environment config

What is still in to do:

1. Move shutdown field from TenantConsumerInfo class
2. Implement in memory registry repo (moving the current implementation)
3. Implement Redis registry repo
4. Add test with Redis registry repo implementation usage

[natansil]

Great effort @TomasMonkevic!
If no env var is set in the image, will redis run or in-memory run?
Currently with docker-compose, does sidecar connect to redis?

[TomasMonkevic]

If no env var is set in the image, will redis run or in-memory run?

In-memory will run

Currently with docker-compose, does sidecar connect to redis?

It doesn't because the environment variable isn't provided.

[natansil]

Cool. sounds good!