Fix CurrentSettings autoload bug in development.
In development env, when we changed any file hit Rails reload, it will failed with this message:
A copy of Gitlab::CurrentSettings has been removed from the module tree but is still active
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
In development env, when we changed any file hit Rails reload, it will failed with this message:
A copy of Gitlab::CurrentSettings has been removed from the module tree but is still active