None response to PUT is not handled properly

[Bar Elharar]

Using OSC_LIB.api.BaseAPI().create(SOME_URL, method='PUT'), will raise a TypeError when None is returned.
In some cases, None response to PUT request is a valid response. e.g. In Octavia API the failover is deferred action, with response code of 202, and response body None. This API call is yet to be merged into the Octavia-client.

I believe the bug originates in CLIFF which tries to unpack None.
Here is a debug log: http://paste.openstack.org/show/628119/

[Bar Elharar (elhararb)]

Eventually, I managed to avoid that by inheriting from osc_lib.command.command.Command instead of ShowOne.