Support Redis ACL

[soranoo]

Is your feature request related to a problem? Please describe.
Redis ACL is a fantastic feature that allows sharing an instance with total isolation.

I checked the docs and don't see the username env, thereby opening an issue here

Describe the solution you'd like
Support username in redis connection.

Describe alternatives you've considered
n/a

Additional context
Also, it would be nice to list all the permissions outpost needed.

Thank you for your consideration.