Use proper prefixing in state configuration

wsuwp-production and wsuwp-vagrant should be used where production and vagrant were used before
Remove the checkout of the WSUWP Platform project from GitHub

This Vagrant instance is already coming up inside this project, so no need to duplicate efforts
Remove `wsuwp-platform` portion of the directory structure in setup commands
Merge pull request #28 from washingtonstateuniversity/28-wpredo

Update wsuwp-vagrant configuration to match new requirements