Updated openstack/openstack
Project: openstack/nova  4655df12b95bf33f5b127b840d3e2e156bc70cf7
null
Ensure anti affinity scheduling works

The query for the group in the system_metadata would not correctly
filter the instances with the groups.

Fixes bug: 1218878

Conflicts:
        nova/db/sqlalchemy/api.py
        nova/tests/db/test_db_api.py

Change-Id: I623c73635c36ffa038ae01476a25ba0c0863e536
(cherry picked from commit 4233e16ba2f5bb85e93494b6eeb9ffff31dbdf30)