configure-resources action fails on focal-yoga

[Corey Bryant]

To recreate:

git clone https://github.com/openstack-charmers/charmed-openstack-tester
tox -e func-target keystone_v3_smoke_focal:focal-yoga

bundle deployment will hang due to:
octavia/0* blocked idle 26 10.5.0.129 9876/tcp Awaiting end-user execution of `configure-resources` action to create required resources

Manually running configure-resources action results in:

$ juju show-action-status 64
actions:
- action: configure-resources
  completed at: "2022-04-04 19:09:16"
  id: "64"
  status: failed
  unit: octavia/0

$ juju show-action-output 64
UnitId: octavia/0
id: "64"
message: Neutron API not available yet, deferring network creation/discovery. ("('neutron',
  'networks', ServiceUnavailable())")
results:
  Stderr: |
    Synchronizing state of octavia-api.service with SysV service script with /lib/systemd/systemd-sysv-install.
    Executing: /lib/systemd/systemd-sysv-install disable octavia-api
    Unit /etc/systemd/system/octavia-api.service is masked, ignoring.
    ovs-vsctl: no row "o-hm0" in table Interface
  Stdout: |
    Reading package lists...
    Building dependency tree...
    Reading state information...
    0 upgraded, 0 newly installed, 0 to remove and 22 not upgraded.
    Hit:1 http://nova.clouds.archive.ubuntu.com/ubuntu focal InRelease
    Get:2 http://security.ubuntu.com/ubuntu focal-security InRelease [114 kB]
    Hit:3 http://ubuntu-cloud.archive.canonical.com/ubuntu focal-proposed/yoga InRelease
    Get:4 http://nova.clouds.archive.ubuntu.com/ubuntu focal-updates InRelease [114 kB]
    Get:5 http://nova.clouds.archive.ubuntu.com/ubuntu focal-backports InRelease [108 kB]
    Fetched 336 kB in 1s (303 kB/s)
    Reading package lists...
    Adding user systemd-network to group octavia
    inactive
    octavia-api (enabled by site administrator)
status: failed
timing:
  completed: 2022-04-04 19:09:16 +0000 UTC
  enqueued: 2022-04-04 19:08:54 +0000 UTC
  started: 2022-04-04 19:08:55 +0000 UTC

[Corey Bryant (corey.bryant)]

This may be a dup of https://bugs.launchpad.net/ovsdbapp/+bug/1965819