All:
I did a presentation on Ansible to my local OpenStack DC user group yesterday:
http://www.slideshare.net/lorinh/vagrant-ansible-and-openstack-on-your-laptop
Ansible playbooks for OpenStack are here: https://github.com/lorin/openstack-ansible
Take care,
Lorin
Nice work!
That's great. This week I just started working on ansible + vagrant +
openstack, so I'm happy to see this. 
Thanks,
Curtis.
If you’re going to be doing multinode stuff in Vagrant, note that you need to set the NIC on the compute node into promiscuous mode for packets to route properly from the controller to a VM inside of a compute host: https://github.com/lorin/openstack-ansible/blob/master/vms/Vagrantfile#L16
I banged my head against that problem for a while before figuring that out.
Take care,
Lorin