Summary

It is not possible today to set the ConnMaxIdleTime for argocd controllers using the redis client.

Motivation

The default duration that go redis client keeps an idle connection in its pool is 30min.
When using redis servers with a timeout value lower than that (and it's the fact for example for redis-ha with the default values), connections are terminated by the server and we end up with error in Argo CD such as broken pipe.

Proposal

This change would introduce the support for this option via the CLI and deployment manifests.