Do not set VRF assign rules for right interfaces of nat instances
Do not set VRF assign rules for right interfaces of nat instances

We are planning not to link service RI with the primary RI of the
right networks of in-network-nat instances. We should also not
set VRF assign rules.

Change-Id: I11ad075a2d91e5da18094612a2c5935366197c94
Partial-Bug: 1554175
Related-Bug: 1562200

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