Add FreeBSD example for azure-chroot.
Add FreeBSD example for azure-chroot.

pecigonzalo/packer,rnaveiras/packer,pecigonzalo/packer,hashicorp/packer,rnaveiras/packer,rnaveiras/packer,hashicorp/packer,hashicorp/packer,ricardclau/packer,mitchellh/packer,mitchellh/packer,mitchellh/packer,ricardclau/packer,rnaveiras/packer,pecigonzalo/packer,pecigonzalo/packer,ricardclau/packer,mitchellh/packer,hashicorp/packer,mitchellh/packer,ricardclau/packer,ricardclau/packer,rnaveiras/packer,ricardclau/packer,rnaveiras/packer