Updated openstack/openstack
Project: openstack/nova  1a8ab235fac310cc932459437bad3c866c03b6b7

Add debug log when over quota exception occurs

There are some weird logs showed in bug 1353962, with
current logs we can't decide which part is wrong.
Add more logs will help operater to know the real reason
that make the quota exceed.

If this change makes too much log out, after bug 1353962
is fixed, we can talk about remove those logs, but currently
it will be helpful.

Change-Id: I2ab1fb62efc06b1cee213920539980e331870bf5
Related-Bug: #1353962