Contrail configure Host Routes in VM

https://github.com/Juniper/contrail-controller/wiki/Static-Routes

Use Case:
http://xuhanp.tumblr.com/post/107088879052/openstack-neutron-subnet-extra-routes-usage

Agent introspect
http://192.168.56.102:8085/Snh_Inet4UcRouteReq?x=1