Keep py3.X compatibility for urllib

Use six.moves.urllib.parse instead of urllib

Change-Id: Ia728005ee0af307a7df042f23f0276f922926465
Closes-Bug: #1280105

troveclient/client.py

@@ -30,10 +30,7 @@ from troveclient import exceptions
 from troveclient.openstack.common.apiclient import client
 from troveclient import service_catalog
 
-try:
-    import urlparse
-except ImportError:
-    import urllib.parse as urlparse
+import six.moves.urllib.parse as urlparse
 
 try:
     import eventlet as sleep_lib