Fixes: ST: allow the same vmi to be referenced in multiple service-instances
Fixes: ST: allow the same vmi to be referenced in multiple service-instances

Accumlates the ACLs before assigning it to the VMI. It was getting
assigned for every VM PT.

Change-Id: Ief33432cfbb4cf5fe37553575975a0973844a6ff
Closes-Bug: 1661134

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