Cleanup manual jobs

This patch simplifies the setup and takes benefit of a new tox
environment called "publishlang" in the repositories that publishes
all translated manuals. This avoids having to change several places
to add a single manual for a new language.

1) Move
     - '{name}-tox-doc-{envlist}':
          envlist: publishdocs
   to openstack-doc-jobs job-group and remove it from the individual
   jobs.

2) Create new job '{name}-tox-doc-publishlang' and add it to
    manual-translation-jobs.

3) Remove all buildlang jobs and replace them in Zuul with publishlang
   jobs using openstack-doc-translation template.
   The publishlang job handles all languages while the buildlang
   jobs were needed for each and every language. The buildlang jobs
   were openstack-install-deploy-guide-{lang},
   openstack-misc-guides-{lang},
   openstack-operations-guide-{lang}, api-site-tox-buildlang-{lang}.

4) Move security-doc in projects.yaml after operations-guide to have
   manual jobs together.

Change-Id: I8932817cf6eebc2df636b119b0d723e9335b8ffe
Merge "Cleanup manual jobs"