fix uninstall details: reorder remove-accounts and cleanse commands
Running sudo gitlab-ctl cleanse before sudo gitlab-ctl remove-accounts results in remove-accounts failing. Also add reboot step.
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Running sudo gitlab-ctl cleanse before sudo gitlab-ctl remove-accounts results in remove-accounts failing. Also add reboot step.