Updated openstack/openstack
Project: openstack/nova  20a8883d0f5f79e0d307021fb162cca3ac1b0161
null
Make detach_volume() use objects

This changes the detach_volume() method in compute manager to take
objects.

Related to blueprint compute-manager-objects-juno

Change-Id: Ia09415c55dee0d49e8925d6eb23737b55255d7e1