import zuul job settings from project-config

This is a mechanically generated patch to complete step 1 of moving
the zuul job settings out of project-config and into each project
repository.

Because there will be a separate patch on each branch, the branch
specifiers for branch-specific jobs have been removed.

Because this patch is generated by a script, there may be some
cosmetic changes to the layout of the YAML file(s) as the contents are
normalized.

See the python3-first goal document for details:
https://governance.openstack.org/tc/goals/stein/python3-first.html

Change-Id: I5c06bc35d0ff9e68743b1d44cbba2541268b88ec
Story: #2002586
Task: #24314

.zuul.yaml

@@ -1,10 +1,22 @@
 - project:
+    templates:
+      - check-requirements
+      - periodic-stable-jobs-neutron
+      - openstack-python-jobs-neutron
+      - openstack-python35-jobs-neutron
+      - publish-openstack-sphinx-docs
+      - release-notes-jobs
     check:
       jobs:
         - neutron-vpnaas-dsvm-functional-sswan
         - neutron-vpnaas-tempest
         - neutron-vpnaas-tox-lower-constraints
         - neutron-vpnaas-tempest-libreswan-centos
+        - openstack-tox-cover:
+            voting: false
+            required-projects:
+              - openstack/neutron
+
     gate:
       jobs:
         - neutron-vpnaas-dsvm-functional-sswan
@@ -23,7 +35,7 @@
       - openstack/tempest
       - openstack/neutron-tempest-plugin
     vars:
-      tempest_test_regex: '^neutron_vpnaas\.'
+      tempest_test_regex: ^neutron_vpnaas\.
       tox_envlist: all-plugin
       devstack_plugins:
         neutron-vpnaas: git://git.openstack.org/openstack/neutron-vpnaas