template/parse_test.go: use diff for easier eye debug
template/parse_test.go: use diff for easier eye debug

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