Added support of an optional setup method for action modules like rsync that…

Added support of an optional setup method for action modules like rsync that need to alter the connection and other inject data before it's established.

lib/ansible/runner/__init__.py

@@ -503,6 +503,8 @@ class Runner(object):
             self.callbacks.on_skipped(host, inject.get('item',None))
             return ReturnData(host=host, result=result)
 
+        if getattr(handler, 'setup', None) is not None:
+            handler.setup(module_name, inject)
         conn = None
         actual_host = inject.get('ansible_ssh_host', host)
         actual_port = port