Bug 1251412

This makes the initial changes to begin COI customization

- use Cisco repos instead of Cloud Archive
- use Cisco repos instead of puppetlabs
- switch COI module to the havana branch
- switch install script to Cisco from Stackforge
- for now we're trying the layering approach to isolate COI changes from upstream files as much as possible so it also sets up the hiera for that

It also requires this pull be merged first: https://github.com/CiscoSystems/puppet-COI/pull/26 (which should be non-impacting as it's into a new branch)