Switch zuul-jobs to publish-openstack-python-docs-infra

Use the publish-openstack-python-docs-infra template over calling
openstack-doc-build directly.

Change-Id: Ic6f1261a542708bc654c588a950ad06ce7e2300a
Signed-off-by: Paul Belanger <pabelanger@redhat.com>

zuul.yaml

@@ -893,6 +893,8 @@
 # to consume).
 - project:
     name: openstack-infra/zuul-jobs
+    templates:
+      - publish-openstack-python-docs-infra
     check:
       jobs:
         - base-integration-centos-7
@@ -902,7 +904,6 @@
         - base-integration-ubuntu-xenial
         - base-integration-opensuse423
         - tox-linters
-        - openstack-doc-build
         - tox-py35-on-zuul
     gate:
       jobs:
@@ -913,7 +914,6 @@
         - base-integration-ubuntu-xenial
         - base-integration-opensuse423
         - tox-linters
-        - openstack-doc-build
         - tox-py35-on-zuul
 
 - project: