Updated openstack/openstack
Project: openstack/nova  9e11cf01498d5c4b1d4877e81e5e740d3614b2b2
null
Move all shelve code paths to BDM objects

At this point only unshelve used direct conductor calls to fetch BDMs so
this patch moves it to objects and fixes tests.

Part of the blueprint: icehouse-objects

Change-Id: I6821222e98bc975fbe618fe922edc41d25f40200