XS Install Config File

Notes about the configuration file that will drive initial installation. We expect it to have

• XS name
• Classes it belongs to (for the mgmt scripts)
• Gold Server name
• Gold Server https key
• Gold Server GPG key (we _could_ fetch it via https, but having it installed means we can use it for USB/CD upgrades)
• Regional key
• Installer's personal key
• WAN config details, including WAN MAC wildcard