Add storage class configuration option for Amazon S3 remote backups
Adds remote backup storage class to config template and sets default config values (see https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/9599).
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Adds remote backup storage class to config template and sets default config values (see https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/9599).