Comment 1 for bug 1905058

This might be related to https://bugs.launchpad.net/charm-kubernetes-master/+bug/1839704 where in comment #7 it was said that this wasn't going to need to changes on the k8s-master side, where I do believe it should.

k8s-master should keep the data in the relation synced, clear the data from the non-leader units, or take advantage of "relation-set --app", although this last option would still require some safe fallback for older versions of juju.