Fix the relevant files lists for lists3 jobs

Fix the infra-prod-service-lists3 job to trigger when we update the
mailman3.yaml group vars file. In addition we make a noop reorganization
change to the mailman3 group file to group exim vars together which will
be used to ensure that this change triggers the lists3 job as expected.

In system-config-run-lists3 we update that job to be triggered when we
update the docker images for mailman. We don't bother testing this now
as that would be masked off by the update to the mailman3 groups file.
But in the future when we do mailman3 image updates we'll be looking for
this job to run.

Change-Id: I994b0a79bf46f525dd9e059719f5a08c9c390b8c

inventory/service/group_vars/mailman3.yaml

@@ -1,7 +1,3 @@
-exim_queue_interval: '1m'
-exim_queue_run_max: '50'
-exim_smtp_accept_max: '100'
-exim_smtp_accept_max_per_host: '10'
 iptables_extra_public_tcp_ports:
   - 25
   - 80
@@ -24,6 +20,10 @@ borg_backup_excludes_extra:
   - /var/backups/mailman-mariadb
   # Can regenerate indexes from source email files
   - /var/lib/mailman/web-data/fulltext_index
+exim_queue_interval: '1m'
+exim_queue_run_max: '50'
+exim_smtp_accept_max: '100'
+exim_smtp_accept_max_per_host: '10'
 exim_routers:
   - mailman_verp_router: |
       {% raw -%}

zuul.d/infra-prod.yaml

@@ -585,6 +585,7 @@
       - docker/mailman
       - inventory/base
       - inventory/service/host_vars/lists01.opendev.org.yaml
+      - inventory/service/group_vars/mailman3.yaml
       - playbooks/roles/iptables/
       - playbooks/roles/base/exim
       - playbooks/roles/mailman3/

zuul.d/system-config-run.yaml

@@ -338,6 +338,7 @@
     required-projects:
       - opendev/system-config
     files:
+      - docker/mailman
       - playbooks/bootstrap-bridge.yaml
       - inventory/service/host_vars/lists01.opendev.org.yaml
       - inventory/service/group_vars/mailman3.yaml