The two publishing jobs failed, fix them:
* ZUUL_REFNAME in playbooks/publications/run.yaml#n12 is not set, use
the proper variable.
* index publishing is done from master, always check out master for
this like it was done for version 2.
Change-Id: I494c69e51282418bbc7cac45454abe8c52e6920f
Add native zuul v3 job to publish index file of
openstack-infra/publications.
Run the post job on all branches, so that a change to the master branch
regenerates the index file.
Add native zuul v3 job to publish a specific publication from
openstack-infra/publications.
Use the job for the project.
Needed-By: I190b34217c87d45e13bca18c7e121189323b698f
Change-Id: I6da66649726a1a96d06d7ca643adeec8ea8649eb