22.03 charms do not support zed

[Alexander Balderson]

Solutions QA is working on testing Openstack Zed, however the OVN charms are failing to deploy because they do not recognize Zed as a valid release:

unit-octavia-ovn-chassis-1: 00:08:33 ERROR unit.octavia-ovn-chassis/1.juju-log Hook error:
Traceback (most recent call last):
  File "/var/lib/juju/agents/unit-octavia-ovn-chassis-1/.venv/lib/python3.10/site-packages/charms/reactive/__init__.py", line 74, in main
    bus.dispatch(restricted=restricted_mode)
  File "/var/lib/juju/agents/unit-octavia-ovn-chassis-1/.venv/lib/python3.10/site-packages/charms/reactive/bus.py", line 390, in dispatch
    _invoke(other_handlers)
  File "/var/lib/juju/agents/unit-octavia-ovn-chassis-1/.venv/lib/python3.10/site-packages/charms/reactive/bus.py", line 359, in _invoke
    handler.invoke()
  File "/var/lib/juju/agents/unit-octavia-ovn-chassis-1/.venv/lib/python3.10/site-packages/charms/reactive/bus.py", line 181, in invoke
    self._action(*args)
  File "/var/lib/juju/agents/unit-octavia-ovn-chassis-1/charm/reactive/ovn_chassis_handlers.py", line 28, in configure_deferred_restarts
    with charm.provide_charm_instance() as instance:
  File "/var/lib/juju/agents/unit-octavia-ovn-chassis-1/.venv/lib/python3.10/site-packages/charms_openstack/charm/core.py", line 99, in __enter__
    return BaseOpenStackCharm.singleton
  File "/var/lib/juju/agents/unit-octavia-ovn-chassis-1/.venv/lib/python3.10/site-packages/charms_openstack/charm/core.py", line 352, in singleton
    _singleton = get_charm_instance(release=release,
  File "/var/lib/juju/agents/unit-octavia-ovn-chassis-1/.venv/lib/python3.10/site-packages/charms_openstack/charm/core.py", line 165, in get_charm_instance
    return (_get_charm_instance_function or default_get_charm_instance)(
  File "/var/lib/juju/agents/unit-octavia-ovn-chassis-1/.venv/lib/python3.10/site-packages/charms_openstack/charm/core.py", line 133, in default_get_charm_instance
    raise RuntimeError(
RuntimeError: Release zed is not a known OpenStack release?

I would expect either a candidate/testing channel for testing OVN with Zed, or support in the stable charms to support Zed.

[Alex Kavanagh (ajkavanagh)]

I *think* this may be overtaken by events now, so I'm tentatively going to close it, as we have may test runs in CI/CD gate that use zed with the 22.09 charms.