The connection plugin no longer falls back on using the
inventory_hostname as the container_name. Set container_name as a host
var for each container in the test inventory.
Change-Id: I5ded967cb1444024540e290ae1f1ea8679d0c3dd
Move test host vars from the inventory to individual files for each
host. 'ansible_become' has been removed from localhost's vars since it
should be handled on a playbook basis.
Change-Id: Ia782c502cccc1bfbd83a40047e59271906dfbf75