[pythonActorX] update input signature to fit current standard

pypushflow/test/pythonActor1.py

@@ -24,6 +24,6 @@ __license__ = "MIT"
 __date__ = "28/05/2019"
 
 
-def run(**kwargs):
+def run(*args, **kwargs):
 
     return {'actor1': True}

pypushflow/test/pythonActor2.py

@@ -24,6 +24,6 @@ __license__ = "MIT"
 __date__ = "28/05/2019"
 
 
-def run(**kwargs):
+def run(*args, **kwargs):
 
     return {'actor2': True}