Add Ubuntu Server 13.04 x64 Raring Ringtail

      Ubuntu Server 13.04 (Raring Ringtail) x64
        + VirtualBox Guest Additions 4.2.12
        + Chef 11.4.4
        + Puppet 2.7.18

      VM Defaults:
        Processors: 2, Base Memory: 2048 MB, Storage: 60 GB