the default listen_ip.
make a loop for more flexibility.
Get a listen ip specifically for that host.
see if components have listen_ip defined before using ansible_default_ipv4
Make service files look for listen_ip variable.
implemented listen_ip variable here too
Made keystone use repo wide secrets file.
Made glance-controller use repo wide secrets file.
kill and then remove image
Made neutron-controller use repo wide secrets file.
Made nova-controller use repo wide secrets file
Made nova-compute use repo wide secrets file.
Made rabbitmq use repo wide secrets file.
Allow creation of admin-openrc.sh in docker.
added provider_interfaces.
added persistent root folder.
make each dir explicitely
added missing env vars.
mapped kvm machine-id from host
