Revision 36480

  Add possibility to deactivate a worker (i.e. remove it from the active list) during Collect
  in the case a failure status (!= 0) is received. This cannot be the default because an action
  can have failure among its possible return states. The new feature is used by EnablePackage
  to deactivate a worker where the requested packages could not be enabled properly.
  Should fix an issue reported by ALICE.