[FEATURE] Use Vagrantcloud for boxes

Chagne Vagrantfile to use new mocdk Vagrantcloud boxes

Also add new profile manifests for beanstalk, mongo, and minor bugfixes
to existing profiles.

The machine will now install nfs-server and export /home/sites as an
NFS Share, locked to user vagrant and group www-data.
Use mountNfs.sh to mount the directory.