Re-enable scenario 003 integration job

We've replaced ml2+linuxbridge by ml2+ovn in scenario 003, so this
module is now used in that scenario as well.

Depends-on: https://review.opendev.org/849080
Change-Id: Ie535f4abc79b1b7d12082357976746d7eec80848

.zuul.yaml

@@ -2,9 +2,6 @@
     templates:
       - puppet-openstack-check-jobs
       - puppet-openstack-module-unit-jobs
-      - puppet-openstack-integration-jobs-scenario001
-      - puppet-openstack-integration-jobs-scenario002
-      - puppet-openstack-integration-jobs-scenario004
-      - puppet-openstack-integration-jobs-scenario005
+      - puppet-openstack-integration-jobs-all
       - puppet-openstack-litmus-jobs
       - release-notes-jobs-python3