Cleanup zuul configuration

Remove publishing jobs, this project is not under governance
and cannot publish to docs.openstack.org. Replace the publishing
jobs by jobs that just test but do not publish.

Remove name from project stanza, it is not needed and will only
break in case of renames.

Use openstack-cover-jobs template instead of individual job.

Change-Id: I187d4ae7150ee9b4888af70e54cf6f2d3f80225a

zuul.d/project.yaml

@@ -1,20 +1,19 @@
 - project:
-    name: x/tobiko
-
     templates:
+      - openstack-cover-jobs
       - openstack-python-jobs
       - openstack-python35-jobs
       - openstack-python36-jobs
       - openstack-python37-jobs
       - publish-to-pypi
-      - publish-openstack-docs-pti
-      - release-notes-jobs-python3
+      - build-openstack-docs-pti
 
     check:
       jobs:
-        - openstack-tox-cover
+        - build-openstack-releasenotes:
+            vars:
+              sphinx_python: python3
         - openstack-tox-pylint
-
         - tobiko-devstack-functional
         - tobiko-devstack-scenario-centos-7
         - tobiko-devstack-scenario-centos-7-queens
@@ -25,4 +24,7 @@
 
     gate:
       jobs:
+        - build-openstack-releasenotes:
+            vars:
+              sphinx_python: python3
         - openstack-tox-pylint