Catch-all for Zookeeper WatchedEvents, log instead of having it throw exception

On our setup we get the following unhandled events on bootup of a node
(right after RemoveNode messages is received):
	'Received unknown Zookeeper WatchedEvent NodeDeleted for path /clustername/members/1 (state = SyncConnected)'

Someone with more Norbert insights might want to look in to what to do
about these messages (react or ignore properly).
Allow RemoteException to provide raw error message