Updated openstack/openstack
Project: openstack/nova  42abcab2154d650ff1496494a25a3646bba9229b

nova-net: add more useful logging before raising FixedIpLimitExceeded

The OverQuota exception that we get back from the DB API contains some
useful information about the quota limits for the project and resource
and the current usage, so we can log that before raising
FixedIpLimitExceeded. Also logs the actual project ID passed to
quotas.reserve rather than context.project_id since it's possible those
are different.

This should help us figure out if we're leaking resources in gate runs.

Related-Bug: #1353962

Change-Id: Ia8a6d2336ddbbe28178be8d3ce4d97e6d4ab3787