Fix /etc/hosts in headnode GZ to include all the usb-created/system zones.
Fix /etc/hosts in headnode GZ to include all the usb-created/system zones.

numericillustration/sdc-headnode,numericillustration/sdc-headnode,numericillustration/sdc-headnode,kaizengarden/sdc-headnode,joyent/sdc-headnode,kaizengarden/sdc-headnode,kaizengarden/sdc-headnode,kaizengarden/sdc-headnode,joyent/sdc-headnode,joyent/sdc-headnode,joyent/sdc-headnode