revert back to ruby 2.1
Revert Ruby 2.2 changes - until we solve https://gitlab.com/gitlab-org/gitlab-ce/issues/13514
This also updates Ruby 2.1.7 to 2.1.8
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Revert Ruby 2.2 changes - until we solve https://gitlab.com/gitlab-org/gitlab-ce/issues/13514
This also updates Ruby 2.1.7 to 2.1.8