Updated openstack/openstack
Project: openstack/nova  9df86331e510f2203f4b00263822c4a2f1161ece

Downgrade quota exceeded log messages

A user going over quota is a everyday occurrence, no need to log as a
warning. This information is only useful when trying to debug, so move
to debug level.

Change-Id: I6a59d62962ff660aec4898ad525c4b3c3b04faba