Update validation logic for missing replication region
Update validation logic for missing replication region

grubernaut/packer,mitchellh/packer,bryson/packer,rnaveiras/packer,hashicorp/packer,ricardclau/packer,grubernaut/packer,hashicorp/packer,dave2/packer,grubernaut/packer,rnaveiras/packer,tas50/packer,timsutton/packer,mitchellh/packer,paulmey/packer,paulmey/packer,tas50/packer,grubernaut/packer,bryson/packer,hashicorp/packer,rnaveiras/packer,tas50/packer,timsutton/packer,grubernaut/packer,timsutton/packer,rnaveiras/packer,pecigonzalo/packer,bryson/packer,ricardclau/packer,rnaveiras/packer,dave2/packer,pecigonzalo/packer,ricardclau/packer,paulmey/packer,paulmey/packer,ricardclau/packer,mitchellh/packer,timsutton/packer,bryson/packer,tas50/packer,paulmey/packer,hashicorp/packer,dave2/packer,ricardclau/packer,dave2/packer,mitchellh/packer,dave2/packer,rnaveiras/packer,tas50/packer,dave2/packer,pecigonzalo/packer,ricardclau/packer,timsutton/packer,bryson/packer,bryson/packer,pecigonzalo/packer,timsutton/packer,paulmey/packer,mitchellh/packer,grubernaut/packer,tas50/packer