Updated openstack/openstack
Project: openstack/nova  caaafac223deb1e06665ea50bbbbcc2c90d7feeb

Fix direct use of aggregate module objects

This replaces all uses of nova.objects.aggregate.Aggregate* with
nova.objects.Aggregate*.

Partial-Blueprint: object-subclassing

Change-Id: Ib1abb5a3d85c2bc4aae9951da97bea24fe6327de