Publish docs and release notes on openstack.o.o

Kayobe is now a kolla deliverable [1], so should use the official
site for publishing release notes and docs.

Links will be updated once these have been published.

[1] http://lists.openstack.org/pipermail/openstack-discuss/2019-June/007250.html

Change-Id: I9cc0bf08aa69386a18278f240c751a4d9956f926

zuul.d/project.yaml

@@ -1,16 +1,14 @@
 ---
 - project:
     templates:
-      - docs-on-readthedocs
       - openstack-cover-jobs
       - openstack-python35-jobs
       - openstack-python36-jobs
       - openstack-python-jobs
-    vars:
+      - publish-openstack-docs-pti
-      rtd_webhook_id: '50407'
+      - release-notes-jobs-python3
     check:
       jobs:
-        - build-openstack-releasenotes
         - kayobe-tox-ansible-syntax
         - kayobe-tox-ansible
         - kayobe-tox-molecule
@@ -22,7 +20,6 @@
     gate:
       queue: kayobe
       jobs:
-        - build-openstack-releasenotes
         - kayobe-tox-ansible-syntax
         - kayobe-tox-ansible
         - kayobe-tox-molecule