vRouter utils: nh, fixing composite next hop.
vRouter utils: nh, fixing composite next hop.


Change-Id: If83a024b068cacb89845d3be95b22af27566f60a
Closes-bug: #1567499

codilime/contrail-vrouter,codilime/contrail-vrouter,codilime/contrail-vrouter,codilime/contrail-vrouter