Connect the -v cli argument to the verbose flag in xmlrpclib

If you pass two -v to the ipa command you'll get the XML-RPC data in
the output. This can be handy so you know exactly what went out over
the wire.

ipalib/constants.py

@@ -118,7 +118,7 @@ DEFAULT_CONFIG = (
     ('webui_assets_dir', None),
 
     # Debugging:
-    ('verbose', False),
+    ('verbose', 0),
     ('debug', False),
     ('mode', 'production'),