Increase memory size of VM for zfs and move to pkg_add from ports
Add a cleanup script for post provisioning cleanup
Ugh - not only do we need bash installed - needs to be default shell

Sadly it appears we need the following for omnibus chef to work

* bash installed
* /bin/bash symlinked to /usr/local/bin/bash
* Curl installed (or wget - or omnitruck updated to support "fetch")
* bash as the default shell for the "vagrant" user