Fix for ussuri

The ussuri branch of the pythonclient wasn't working, as the map
needed to be converted back into a list. This patch fixes that.

Change-Id: I04f9a282462081ab7ebe29c9e9c90cb032898d5f

gbpclient/gbpshell.py

@@ -933,8 +933,8 @@ class GBPShell(app.App):
 
 def main(argv=sys.argv[1:]):
     try:
-        return GBPShell(NEUTRON_API_VERSION).run(map(encodeutils.safe_decode,
-                                                     argv))
+        return GBPShell(NEUTRON_API_VERSION).run(
+            list(map(encodeutils.safe_decode, argv)))
     except exc.NeutronClientException:
         return 1
     except Exception as e: