update changelog
update changelog

Add 9238 to list of bug fixes
pecigonzalo/packer,rnaveiras/packer,hashicorp/packer,ricardclau/packer,mitchellh/packer,mitchellh/packer,mitchellh/packer,mitchellh/packer,ricardclau/packer,hashicorp/packer,rnaveiras/packer,rnaveiras/packer,rnaveiras/packer,rnaveiras/packer,ricardclau/packer,hashicorp/packer,pecigonzalo/packer,rnaveiras/packer,ricardclau/packer,mitchellh/packer,ricardclau/packer,hashicorp/packer,pecigonzalo/packer,pecigonzalo/packer,ricardclau/packer