engine: NUMA feature actions and queries

Queries and actions command for NUMA features.
UX and Restful API development could base on this commit.

The actions and queries define is on ovirt wiki page
http://www.ovirt.org/Features/Detailed_NUMA_and_Virtual_NUMA

Change-Id: I2f297311a49c051b7ae2daee540d96210bf1a66d
Bug-Url: https://bugzilla.redhat.com/1069303
Signed-off-by: Jason Liao <chuan.liao@hp.com>