Backport some EE changes from adding shared_runners_minutes_limit to the API
What does this MR do?
Reduce conflicts from https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/1942
Edited by username-removed-423915
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Reduce conflicts from https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/1942