Drop unnecessary arg when instantiating HTTP class

Fixes bug 1190111

Change-Id: I45e5e5d5af97a4f75833d9ca000b1b555bdda752

ceilometerclient/common/http.py

@@ -77,7 +77,7 @@ class HTTPClient(object):
     def get_connection(self):
         _class = self.connection_params[0]
         try:
-            return _class(*self.connection_params[1],
+            return _class(*self.connection_params[1][0:2],
                           **self.connection_params[2])
         except httplib.InvalidURL:
             raise exc.InvalidEndpoint()