Adding default playbook
Adding default playbook

Pulling from https://github.com/StackStorm/st2workroom/pull/27/files#diff-ae88a52b13b7fff7115ff687426104fcR20, this commit adds some metadata necessary to bootstrap ansible in the workroom for those using the ansible provisioner.
StackStorm/st2workroom,StackStorm/st2workroom,lattwood/st2workroom,StackStorm/st2workroom,lattwood/st2workroom,lattwood/st2workroom