Extract existing provisioning into a separate repository

Everything in the `provision/` directory should be moved out to a new repository—WSU-Web-Provisioner. This will allow us to add provisioning for servers supporting multiple applications, including Magento, WordPress, and Search.

WSUWP-Environment will be used to provide the development environment. This includes the `Vagrantfile` and possibly some scripting to do an initial checkout of the WSUWP-Platform repository to match current behavior.