Updated openstack/openstack
Project: openstack/nova  c07f7bbbce2d17fcde4d877a6ad06f33d404e5c3

Move volume_clear option to where it's used

The `volume_clear` and `volume_clear_size` option are used in `lvm.py` so we
should move the definition there.

Change-Id: Ic619c2db0bb1b5ccc7dcbec1a500c3dcb1110b26