Upgrade vagrant 1.2

I originally used this repo to test some things with mcollective.  After installing the latest version of Vagrant the startup failed.  I updated the Vagrantfile to work with the latest version.  I also changed the base subnet ip to one that's not commonly found since the 192.168.2 conflicted with my internal network.

If you're interested in the Vagrantfile update, but not the ip subnet please let me know and I can easily just do a different branch -> pull request for that.