Comment out PXE nodes

I have not been using them and they clog
up the vagrant status view
update ssh to use my repo

b/c the OS regex in params is failing with
puppet 3.2.3.
Add test_file class group

And use it in the 2_role scenario.
First pass swift implementation

This is the first pass towards implementing swift
using the data model.

It assumes that the swift classes have been removed
from puppet-COI.

- adds data mappings for swift based on the 2_role deployment
- removes node declarations
- adds swift roles to 2_role scenario
- refactors hiera data
Add swift to list of deployed services

So that the keystone endpoints are installed.