[EE] Support multiple Redis instances based on queue type

Merge of upstream changes from CE.

• resolve merge conflicts
• update EE functionality dependent on Redis
• pass CI pipeline

see https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/11573 and gitlab-org/gitlab-ce#30392 for more context

• Add support for multiple key-value stores
  • allows different policies for retention, backup, deployment topologies by key namespace
• Abstract key-value store name away from name of underlying technology such as "Redis"
• note that config files, unix port numbers, and unix sockets for communication with Redis have been cloned and reconfigured

partially solves:

• gitlab-org/gitlab-ce#30392

see also:

• WIP MR for gdk required for testing on laptop
• https://gitlab.com/gitlab-org/gitlab-ce
• https://gitlab.com/gitlab-org/gitlab-ee
• https://gitlab.com/gitlab-org/omnibus-gitlab
• gitlab-com/infrastructure#1682 (closed)
• gitlab-com/infrastructure#1631 (closed)
• gitlab-com/infrastructure#1802 (closed)
• gitlab-com/infrastructure#1575 (closed)
• gitlab-org/gitlab-ce#33113
• https://gitlab.com/gitlab-org/gitlab-ce/issues/33182
• https://gitlab.com/gitlab-org/gitlab-ce/issues/33187
• https://gitlab.com/gitlab-org/gitlab-development-kit/merge_requests/298
• https://gitlab.com/gitlab-org/omnibus-gitlab/issues/2389
• https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/11573

/cc @stanhu @rspeicher

/label Platform Community Contribution