Add system-config-run-base job

This adds a job which creates a bridge-like node and bootstraps it,
and then runs the base playbook against all of the node types we
use in our control plane.  It uses testinfra to validate the results.

Change-Id: Ibdbaf511bbdaee46e1335f2c83b95ba1553a1d94
Depends-On: https://review.openstack.org/595905

tox.ini

@@ -29,6 +29,9 @@ commands = {posargs}
 deps = -r{toxinidir}/doc/requirements.txt
 commands = sphinx-build -W -E -b html doc/source doc/build/html
 
+[testenv:testinfra]
+commands = py.test -n 5 --connection=ansible --ansible-inventory=/etc/ansible/hosts/inventory.yaml --hosts=all -v {posargs}
+
 [flake8]
 show-source = True
 exclude = .tox,.eggs