Add secondary HD to Vagrant virtualbox

This allows us to test MCV's ability to paritition and format a disk.
Enable partitioning, formatting, mounting drives

This commit enables basic storage management operations such as
partition drives, formatting them with file systems, and mounting
them.  This is useful because in EC2 often all your EBS drives etc.
need to be set up by you manually.
Merge pull request #1 from elliot42/filesystem

Enable partitioning, formatting, mounting drives