Updated openstack/openstack
Project: openstack/nova  dfcd6a8951b23f1c4f8bc880b44a2472e8e499b0

Compute: use an instance object in terminate_instance

The instance in terminate_instance is an object. Use the object format
when locking the instance.

TrivialFix

Change-Id: I7b40f0dcdbe1866443388a83957c4ebafadd978e