Merge "switch documentation job to new PTI"

zuul.d/project.yaml

@@ -2,9 +2,9 @@
     templates:
       - openstack-python-jobs
       - openstack-python35-jobs
-      - publish-openstack-sphinx-docs
+      - publish-openstack-docs-pti
       - check-requirements
-      - release-notes-jobs
+      - release-notes-jobs-python3
     check:
       jobs:
         - ipa-tempest-dsvm-partition-bios-ipmi-direct-coreos-src