Tag a spec as :nested_groups since it fails on MySQL
What does this MR do?
This fixes master
which was broken for 2 days already: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/12322
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
This fixes master
which was broken for 2 days already: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/12322