Change BrooklynLauncherRebindToCloudObjectStoreTest to live

- Was previously integration, but it writes to a live object store
  (depending on the configuration of named:brooklyn-jclouds-objstore-test-1)
Mark object-store’s testCleanDoesNotRebindToExistingApp as WIP

- fails because CLEAN does not delete the existing data from the 
  object store, which is a good thing really (unless backup was 
  extremely good!)