I use this: https://github.com/johnmarkschofield/rpc-aio-maker for provisioning and configuring prior to Ansible.
I then use this: https://github.com/rcbops/ansible-lxc-rpc/tree/master/tools to run the ansibles.
(Actually, I use https://github.com/johnmarkschofield/rpc-aio-maker/blob/master/install_openstack.bash , which calls install.py from the tools dir.)