Test gitea project creation playbook

Add an option to run a playbook (in the fake bridge context) after
running the base playbook.  Use this to run a new playbook which
exercises gitea project creation after bootstrapping the gitea
service.

Disable ansible-lint 304 because it erroneously thinks shell and
command are the same thing.

Change-Id: I0394b614771bc62b9fe23d811defd7767b3d10db

tox.ini

@@ -24,7 +24,8 @@ commands =
   #  We often deploy latest pip packages
   bash -c "find roles playbooks -type f -regex '.*.y[a]?ml' -print0 | xargs -t -n1 -0 \
     ansible-lint -x ANSIBLE0004 -x ANSIBLE0006 -x ANSIBLE0007 -x ANSIBLE0010 \
-                 -x ANSIBLE0011 -x ANSIBLE0012 -x ANSIBLE0013 -x ANSIBLE0015"
+                 -x ANSIBLE0011 -x ANSIBLE0012 -x ANSIBLE0013 -x ANSIBLE0015 \
+                 -x 304"
 
 [testenv:venv]
 commands = {posargs}