Updated openstack/openstack
Project: openstack/nova  f6ce6532bcd4eb149a74b6c8fc388bb2b9cdd46e

Make get_image_metadata() use Instance.get_flavor()

This cleans up the last use of extract_flavor() in compute/, aside from
resource tracker.

Related to blueprint flavor-from-sysmeta-to-blob

Change-Id: I2a5c2b5d2220a05ea7e921f7d7077c6880fbc5bb