Integration

Putting this up here In case opscode might be interested. This is my cleanup and decouple of the rcb-ops fork of the opscode keepalived cookbook which brings in some nice LWRP's for managing keepalived. I removed the rcb-ops specific bits and made it a more generic "library" cookbook as well as adding some integration tests. If this is rejected/closed I am fine with that, but I do think it would be good to get this back into the canonical source.