Comment 5 for bug 1960622

This appears to be happening due to this change in ceph-mon:
https://opendev.org/openstack/charm-ceph-mon/commit/da798bdd95f8fa19ce42363be6bfb268d62fe690

Running with the prior commit in the ceph-mon git tree is succesful (commit 05a03bd10d885d161b07e6acf47d030549562768).