Handle unmounting and mounting of /var/www/ in provisioning rather than Vagrantfile

This allows us to specify requirements and be a bit cleaner on the order of happenings.
Add a first stage SQL dump for an initial single site setup

We'll likely never use this stage, but it provides the pre multisite setup with one admin user.
Add a second stage SQL Dump with an initial multisite setup
Default nginx location should be IP only and should not point to WordPress
Introduce nginx config for all *.wsu.edu sites

A somewhat near term goal will be to make this more dynamic. Before provisioning, you should be able to specify a root network domain and have it auto fill some of these config files rather than them being hardcoded to *.wsu.edu everywhere.
Make the server aware of the wsu.edu nginx config during provisioning
Move the content.wp.wsu.edu nginx configuration to new wp.wsu.edu conf file
Nginx should restart when wp.wsu.edu.conf changes as well