Updated openstack/openstack
Project: openstack/nova  6a00d4deb07f557b11509b8926f29ec5ca8dd0f6
null
baremetal: Add missing method to volume driver

Added get_hypervisor_version(), which is called by underlying
LibvirtVolumeDrivers. Also added tests roughly checking if the
underlying drivers can be loaded and be called without error.

Partial-Bug: #1208707
Change-Id: Ida6b6800d1ef518c6e76d6b2ab4ac2f795a744ca