updating spec with related yang changes.
updating spec with related yang changes.

Change-Id: I4f7ceed89fbca2321eaffbfab010768b70a31885
Signed-off-by: Siva Kumar Perumalla <c27ea60a610a716dfccf31e0eb7c3f35c4d41d1b@gmail.com>

opendaylight/netvirt,opendaylight/netvirt,opendaylight/netvirt,opendaylight/netvirt,opendaylight/netvirt