Don't pass self to a bound method

getattr(self, 'file') returns a bound method. That bound method doesn't
need a self parameter.

Change-Id: I798fa960708fa9661193ff8b6056a073ebd82dca

zuul/ansible/action/normal.py

@@ -50,7 +50,7 @@ class ActionModule(normal.ActionModule):
         handler_name = 'handle_{action}'.format(action=self._task.action)
         handler = getattr(self, handler_name, None)
         if handler:
-            handler(self)
+            handler()
             return True
         return False