Schema changes to support flat subnet Partial-Bug: #1592970
Schema changes to support flat subnet
Partial-Bug: #1592970

Change-Id: I2e259b22333960d370af40b1f6c11459e539f9b7

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