HCL2: Make the `build`.`sources` argument list optional
HCL2: Make the `build`.`sources` argument list optional
hashicorp/packer,mitchellh/packer,pecigonzalo/packer,mitchellh/packer,pecigonzalo/packer,rnaveiras/packer,rnaveiras/packer,ricardclau/packer,rnaveiras/packer,ricardclau/packer,mitchellh/packer,ricardclau/packer,rnaveiras/packer,rnaveiras/packer,ricardclau/packer,hashicorp/packer,rnaveiras/packer,pecigonzalo/packer,hashicorp/packer,ricardclau/packer,mitchellh/packer,mitchellh/packer,hashicorp/packer,ricardclau/packer,pecigonzalo/packer