nova quota fail to create due a recent change.
Keystone endpoint cannot have version v3 in the url.
During upgrade to Pike nova endpoint must be changed
to be versionless.
Change-Id: Idb433d526f7d44dfe4fd02ee918bd67e05c523f6
Depends-On: I568db4559428525ac6c5083cfc20cffc20be6342
Closes-Bug: #1668663