UIMA-AS service not handling ResourceInitializationException from nested AEs

If a nested delegate throws ResourceInitializationException, the UIMA-AS service just hangs never processing the exception. The problem is that the nested uima-as controller doesnt have an instance of a callback listener to receive exceptions. Only the top level controller has the listener registered. To fix this, during initialization of the uima-as aggregate controller register the listener (via addControllerCallbackListener()) with every controller.