Adds following extensions:
1. Create volume from image
2. Copy volume to image
Added unit tests.
Implements: blueprint create-volume-from-image
Conflicts:
cinder/api/openstack/volume/contrib/volume_actions.py
cinder/tests/api/openstack/fakes.py
cinder/tests/api/openstack/volume/contrib/test_volume_actions.py
cinder/tests/policy.json
nova/api/openstack/volume/volumes.py
nova/flags.py
nova/tests/api/openstack/volume/test_volumes.py
nova/tests/test_volume.py
nova/utils.py
nova/volume/api.py
nova/volume/manager.py
This is based on a cherry-pick of cinder commit
2f5360753308eb8b10581fc3c026c1b66f42ebdc with bug fixes
8c30edff982042d2533a810709308b586267c0e9 and
ffe5036fa0e63ccde2d19aa0f425ec43de338dd7 squashed in.
Change-Id: I9c73bd3fa2fa2e0648c01ff3f4fc66f757d7bc3f
3487ece9cb