Updated openstack/openstack
Project: openstack/nova  5a901a43fffa4e654082050efa999a1a28615391
null
Update pre_live_migration to take instance object

Update the pre_live_migration method in the compute api, compute manager,
and virt driver to take an instance object.  The update to the compute manager
call also happens to finish the conversion of
ensure_filtering_rules_for_instance in the virt driver API, as well.

Part of blueprint virt-objects

Change-Id: I2ddb1d72dbbd11e153f75171b3a4dc4f87ca3972