Updated openstack/openstack
Project: openstack/nova  524fc1791c615452d8cd60a021e24eac8e1de004

Fix the rest of direct uses of instance module objects

This switches the remaining occurences of
nova.objects.instance.Instance* to nova.objects.Instance*.

Partial-Blueprint: object-subclassing

Change-Id: I3017c149cc9fbc6b1fbecb003dc55455b1dcd12c