add segfault detection to TQM

* prevents indefinite hangs when a worker segfaults
(cherry picked from commit 569377e951)

lib/ansible/executor/task_queue_manager.py

@@ -333,7 +333,7 @@ class TaskQueueManager:
         defunct = False
         for idx,x in enumerate(self._workers):
             if hasattr(x[0], 'exitcode'):
-                if x[0].exitcode in [-9, -15]:
+                if x[0].exitcode in [-9, -11, -15]:
                     defunct = True
         return defunct