Support configuration of Redis Sentinels by persistence class
On GitLab.com, we use Redis Sentinels for all persistence classes, so we'll need this support.
Required for https://gitlab.com/gitlab-com/infrastructure/issues/3655
On GitLab.com, we use Redis Sentinels for all persistence classes, so we'll need this support.
Required for https://gitlab.com/gitlab-com/infrastructure/issues/3655