This is going to require some work to port several puppet things to Ansible. To test the execution mechanism, let's just stub it out for now. Change-Id: Ief09ca30b19afffd106c98018cb23a9715fc9a69
Rather than list the hostnames individually, use the inventory group. Change-Id: I554fb33f26c31df5f97ffd5be61f6d3e17faefa5
Reconfigure a running zuul-scheduler. Change-Id: I21f16c221903ccd9b726a091c3acf3e755788263