The python-zunclient sends the 'nets' parameter to server
with empty string. For example:
* {'network': xxx, 'port': '', 'v4-fixed-ip': '', 'v6-fixed-ip': ''}
* {'network': '', 'port': xxx, 'v4-fixed-ip': '', 'v6-fixed-ip': ''}
This patch changes it to:
* {'network': xxx}
* {'port': xxx}
The new form doesn't contain a key with empty string value.
This allows a better validation on the server side in the
future.
Change-Id: Iebb3ddb53e5e9d31175e6e7eeb170a66a8630a17
4bc01dfb7f