Add updated mTLS scenario
This is an update to the mTLS setup that was failing in https://gitlab.com/gitlab-org/gitlab/-/issues/297377#note_483583661
Edited by George Koltsov
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
This is an update to the mTLS setup that was failing in https://gitlab.com/gitlab-org/gitlab/-/issues/297377#note_483583661