Charm does not process radosgw per unit keys

[Liam Young]

The charm ignores key_name on the radosgw relation so never provides radosgw units with the new style per unit keys. This causes the ceph-radosgw charm to fail to perform a zone list.

Below is replicated in this pastebin: https://paste.ubuntu.com/p/WxyTjkMSQz/

2020-10-13 08:41:34 [ERROR] Model default_alias (zaza-b1fb9b174193)
2020-10-13 08:41:35 [ERROR] Applications in error state: ceph-radosgw
2020-10-13 08:41:35 [ERROR] Units in error state: ceph-radosgw/0
2020-10-13 08:41:35 [ERROR] Juju log for ceph-radosgw/0
2020-10-13 08:41:36 [ERROR] 2020-10-13 08:41:32 DEBUG mon-relation-changed File "/var/lib/juju/agents/unit-ceph-radosgw-0/charm/hooks/charmhelpers/contrib/openstack/utils.py", line 1718, in wrapped_f
2020-10-13 08:41:36 [ERROR] 2020-10-13 08:41:32 DEBUG mon-relation-changed return restart_on_change_helper(
2020-10-13 08:41:36 [ERROR] 2020-10-13 08:41:32 DEBUG mon-relation-changed File "/var/lib/juju/agents/unit-ceph-radosgw-0/charm/hooks/charmhelpers/core/host.py", line 747, in restart_on_change_helper
2020-10-13 08:41:36 [ERROR] 2020-10-13 08:41:32 DEBUG mon-relation-changed r = lambda_f()
2020-10-13 08:41:36 [ERROR] 2020-10-13 08:41:32 DEBUG mon-relation-changed File "/var/lib/juju/agents/unit-ceph-radosgw-0/charm/hooks/charmhelpers/contrib/openstack/utils.py", line 1719, in <lambda>
2020-10-13 08:41:36 [ERROR] 2020-10-13 08:41:32 DEBUG mon-relation-changed (lambda: f(*args, **kwargs)), __restart_map_cache['cache'],
2020-10-13 08:41:36 [ERROR] 2020-10-13 08:41:32 DEBUG mon-relation-changed File "/var/lib/juju/agents/unit-ceph-radosgw-0/charm/hooks/mon-relation-changed", line 328, in _mon_relation
2020-10-13 08:41:36 [ERROR] 2020-10-13 08:41:32 DEBUG mon-relation-changed if zone not in multisite.list_zones():
2020-10-13 08:41:36 [ERROR] 2020-10-13 08:41:32 DEBUG mon-relation-changed File "/var/lib/juju/agents/unit-ceph-radosgw-0/charm/hooks/multisite.py", line 68, in _list
2020-10-13 08:41:36 [ERROR] 2020-10-13 08:41:32 DEBUG mon-relation-changed result = json.loads(_check_output(cmd))
2020-10-13 08:41:36 [ERROR] 2020-10-13 08:41:32 DEBUG mon-relation-changed File "/var/lib/juju/agents/unit-ceph-radosgw-0/charm/hooks/charmhelpers/core/decorators.py", line 40, in _retry_on_exception_
inner_2
2020-10-13 08:41:36 [ERROR] 2020-10-13 08:41:32 DEBUG mon-relation-changed return f(*args, **kwargs)
2020-10-13 08:41:36 [ERROR] 2020-10-13 08:41:32 DEBUG mon-relation-changed File "/var/lib/juju/agents/unit-ceph-radosgw-0/charm/hooks/multisite.py", line 32, in _check_output
2020-10-13 08:41:36 [ERROR] 2020-10-13 08:41:32 DEBUG mon-relation-changed return subprocess.check_output(cmd).decode('UTF-8')
2020-10-13 08:41:36 [ERROR] 2020-10-13 08:41:32 DEBUG mon-relation-changed File "/usr/lib/python3.8/subprocess.py", line 411, in check_output
2020-10-13 08:41:36 [ERROR] 2020-10-13 08:41:32 DEBUG mon-relation-changed return run(*popenargs, stdout=PIPE, timeout=timeout, check=True,
2020-10-13 08:41:36 [ERROR] 2020-10-13 08:41:32 DEBUG mon-relation-changed File "/usr/lib/python3.8/subprocess.py", line 512, in run
2020-10-13 08:41:36 [ERROR] 2020-10-13 08:41:32 DEBUG mon-relation-changed raise CalledProcessError(retcode, process.args,
2020-10-13 08:41:36 [ERROR] 2020-10-13 08:41:32 DEBUG mon-relation-changed subprocess.CalledProcessError: Command '['radosgw-admin', '--id=rgw.juju-dc1c28-zaza-b1fb9b174193-10', 'zone', 'list']' returne
d non-zero exit status 1.
2020-10-13 08:41:36 [ERROR] 2020-10-13 08:41:32 ERROR juju.worker.uniter.operation runhook.go:132 hook "mon-relation-changed" failed: exit status 1

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/757866