ST: Schema changes for using logical router's route target instead of using each client VN's
ST: Schema changes for using logical router's route target instead of using each client VN's

Schema changes: For snat static routes, use logical router's route target instead of using each client VN's

Change-Id: I8f9dc5cdaf5891e0c5b932509707ab185956fc62
Partial-Bug: #1565111

rombie/contrail-controller,nischalsheth/contrail-controller,codilime/contrail-controller,codilime/contrail-controller,nischalsheth/contrail-controller,eonpatapon/contrail-controller,rombie/contrail-controller,nischalsheth/contrail-controller,rombie/contrail-controller,eonpatapon/contrail-controller,codilime/contrail-controller,rombie/contrail-controller,nischalsheth/contrail-controller,rombie/contrail-controller,eonpatapon/contrail-controller,eonpatapon/contrail-controller,nischalsheth/contrail-controller,eonpatapon/contrail-controller,nischalsheth/contrail-controller,codilime/contrail-controller,nischalsheth/contrail-controller,eonpatapon/contrail-controller,codilime/contrail-controller,rombie/contrail-controller,nischalsheth/contrail-controller,rombie/contrail-controller,eonpatapon/contrail-controller,codilime/contrail-controller