Update the GitLab template with some of the changes we can add with the new OpenShift alpha
Mainly updating the redis version, and supporting root_squash for the redis pod.
Fixes: https://gitlab.com/gitlab-org/omnibus-gitlab/issues/1415
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Mainly updating the redis version, and supporting root_squash for the redis pod.
Fixes: https://gitlab.com/gitlab-org/omnibus-gitlab/issues/1415