Remove the hostmanager entry

By this time in the demo, I won't have explained/introduced the
hostmanager plugin. Removing it.
puppet PROVISIONER not PROVIDER
Add renaming scripts

These are the scripts I use to move my demo along. Originally I
wasn't going to commit them, but purely to document the 'nothing
up my sleeve' bit, I might as well add them to the repo. It's
curly-brace expansion at its finest...