Add a forced provisioner to start MySQL on vagrant up

It is helpful to have the local environment up and running after a
simple `vagrant up`, without having to re-run the provisioning steps.
Wrap MySQL forced provisioner in a check for version >= 1.6.0
Merge pull request #383 from kadamwhite/force-provision-mysql-start

Add a forced provisioner to start MySQL on vagrant up
Vagrantfile is Ruby, not shell.

This breaks `vagrant up`, `vagrant destroy`, `vagrant` pretty much anything.
Merge pull request #388 from zamoose/patch-2

Vagrantfile is Ruby, not shell.