Updated openstack/openstack
Project: openstack/cinder  468bb2f40e4f83305624b7b485698f1cb751b591
null
Validate the quota in the API layer for volume extend

The user needs a friendly message feedback if the quota exceeds when
the volume is about to extend.

Change-Id: Ifd523ac5e9039861cf87711dc5c4842b5cb524c2
Closes-Bug: #1256763