Comment 4 for bug 1421315

Tools like the Juju Gui rely on the allwatcher to know when services are added/etc a subordinate with no units should still go across the watcher so we can show it and allow a GUI user to relate it to an existing service in the environment. If the subordinate is not in the AllWatcher output then the GUI will never know that the service already exists and is not able to represent that to users in a sane way.