Simple gateway support. Example localrc entries
CONTRAIL_VGW_INTERFACE=vgw
CONTRAIL_VGW_PUBLIC_SUBNET=2.2.2.0/24
CONTRAIL_VGW_PUBLIC_NETWORK=default-domain:admin:public:public
Remove unused code
Merge pull request #2 from praveenkv/vgw/dev

Simple gateway support. Example localrc entries