frontend: NUMA support

For more information see: http://www.ovirt.org/Features/NUMA_and_Virtual_NUMA

Change-Id: I0712ea82b87d4fe9fc25f196183136485c0c4381
Bug-Url: https://bugzilla.redhat.com/1134880
Signed-off-by: Gilad Chaplik <gchaplik@redhat.com>