Unable to auth as a specific user.

[Gowtham Kumar Madipuri]

the "spark.redis.auth" parameter always authenticates against the default user. There should be a parameter to authenticate against other users.

[JM]

@fe2s looks like 2.7.0 has user parameter; I'm wondering if we could find a way to cherry pick commit from 2.7.0 (1e3ba7a) into 3.0.0?

[adityaprakash-thoughtworks-sde]

@fe2s It would be great if this is implemented for 3.0.0. Are we planning to merge this feature with 3.0.0 anytime soon?