Updated openstack/openstack
Project: openstack/nova  bbc0293ea69323ab14e5e4544d632d6e03d70831

object-ify availability_zones

This change converts availability_zones to use the Aggregate and
Service objects instead of direct database access.

Related to blueprint compute-manager-objects-juno

Change-Id: I2ec7373f063ed728dde2af3b7c8259f4391885bc