Southbound DB still using old OVN format after upgrade when using enable-auto-restarts=False

[Liam Young]

When upgrading ovn-central from victoria to wallaby by updating the source option the charm workload status message shows that ovn-central needs restarting. This is because restarting of services is disabled via enable-auto-restarts=False. But then running the action to restart services ("juju run-action ovn-central/X restart-services deferred-only=True") does not restart the DB services and the southbound db is in the old format

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/c/x/charm-ovn-central/+/786622

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/x/charm-ovn-central/+/786622
Committed: https://opendev.org/x/charm-ovn-central/commit/7f11b1f8575c8b4ba83152d475187ad246a58544
Submitter: "Zuul (22348)"
Branch: master

commit 7f11b1f8575c8b4ba83152d475187ad246a58544
Author: Liam Young <email address hidden>
Date: Fri Apr 16 10:49:25 2021 +0000

    Ensure OVN DB services are restarted

    When the OVN packages are upgraded they restart the ovn-central
    and the ovn north and south DB services. However, the restart
    of ovn-central after the upgrade does not trigger the DB
    services to be restarted. To fix this ensure that when the action
    is run to restart services the DB services are done too.

    Closes-Bug: 1924750
    Change-Id: Ic058a10f9534d35d6402b66f7e1d88a90c772f1f