Script to initialise Debian based box

This script exists because unlike CentOS, Debian/Ubuntu doesn't appear
to have a place where you can execute a post install script. Therefore,
we run this script to do an initial apt-get update and things of that
nature.
Debian specific script for guest additions
Debian script for adding vagrant user public key

There is only a 1 line difference in this script compared to the CentOS
one, which is that you don't appear to be allowed to add the user
directrly to the sudoers file on a Debian distro.
Cleanup script for Debian boxes
Ubuntu 12.04 box definition
Vagrant config for Ubuntu 12.04 nocm base box