Fix a handful of bugs

* `with_items` is not allowed on an include. We're duplicating some code
  now, and plan to ask the community about a better solution.
* pip was not installed, so the pip command was failing.
* The git module apparently tries to use ssh when you specify `git://`
  This is pretty dumb. It also means you have to have the ssh key for
  the server on hand, and (probably) a public key linked to an account
  on github. We're using https to clone now.
Install EPEL by package name, not url.

Turns out this is easier than I thought.