Added playbook which replicates the actions of openstack-service-setup.sh
which was present in earlier versions. This creates a sample set of
flavors, Linux images, networks, security group rules and a router so
OpenStack is ready to use.
The data controlling what is created is all in the file
multi-node-aio/playbooks/vars/openstack-service-config.yml
Change-Id: Ib1999f215aabadb23a3ebeb55fbce4a2caf69030