db: Numa support database implementation

For more information see:
http://www.ovirt.org/Features/Detailed_NUMA_and_Virtual_NUMA#Interface_between_engine_core_and_database_.28schema.29

Change-Id: I2507c084aa214bcfb65e860b11ed7dcf02af50cc
Signed-off-by: Bruce Shi <xiao-lei.shi@hp.com>