Updated openstack/openstack
Project: openstack/nova  a8d53d4458cb83110e4d4c468b01e0162a29c9ad
null
Fix instance metadata tracking during resets

The Instance object tracks its metadata and system_metadata dicts for
changes by maintaining a mirror. This patch fixes the obj_reset_changes()
method which previously would always reset both of those tracking
mirrors anytime any single field was reset.

Change-Id: I496184e3ddaa56b8709f4338fd8cdc2342198273