Add RTV check / Do some cleanup

This adds test kitchen support, and some misc cleanup. But the ultimate goal is to add a check for rock the vote (which isn't included in this PR yet).
Right. There is a [chef-solo-search cookbook](https://github.com/edelight/chef-solo-search) that was used a while ago, I'm not sure how common its use is now. But I'm fine with just using `chef_zero`.