Updated openstack/openstack
Project: openstack/nova  7efa148f9ad78eecad6f877018db387320c2df3e

libvirt: add support for memory backing parameters

Add a libvirt config class for dealing with the XML elements
under the <memoryBacking> section of the guest schema.

Blueprint: virt-driver-large-pages
Change-Id: Icd89508671a8951bed480b901b2d12d44ebb7cab