Update mapstructure-to-hcl2.go
Update mapstructure-to-hcl2.go

make log/usage prompt prefix coherent

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