Open Stack

Some new tempest tests have been showing up that push deeper into the 
Nova API, and popping out seem to be a lot of places where we are 
returning 422 status codes.

422 is WebDav reserved code, not in a proper HTTP spec (WebDAV; RFC 
4918), and a lot of the other projects have purged it out of their APIs.

It would be good to understand if we consider this a bug that should get 
fixed in v2 / a v2 oversight that gets fixed in v3 / or par for the 
course, as that gives us some guidance on what to land in tempest, and 
what we file bugs on for nova.

	-Sean

-- 
Sean Dague
http://dague.net