Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Would solve questions like https://groups.google.com/d/msgid/gitlabhq/3d1771d1-c5e9-4712-add0-68ba8dd5b70b%40googlegroups.com?utm_medium=email&utm_source=footer
/cc @jacobvosmaer