marvin : cloudstack-version is not reqd for json load

To build back cloudstack response we don't need to load the
'cloudstack-version' string, only the response

tools/marvin/marvin/jsonHelper.py

@@ -121,7 +121,7 @@ def getResultObj(returnObj, responsecls=None):
     
     if len(returnObj) == 0:
         return None
-    responseName = returnObj.keys()[0]
+    responseName = filter(lambda a: a!=u'cloudstack-version', returnObj.keys())[0]
     
     response = returnObj[responseName]
     if len(response) == 0:

tools/marvin/marvin/sandbox/demo/simulator/simulator.cfg

@@ -148,10 +148,6 @@
             "name": "workers", 
             "value": "10"
         }, 
-        {
-            "name": "use.user.concentrated.pod.allocation", 
-            "value": "false"
-        }, 
         {
             "name": "account.cleanup.interval", 
             "value": "600"