Comment 2 for bug 1675387

So, the reason I think an action is better than juju run:

 1) the charm knows which OSDs are on which node; I, as a human,
    don't. That makes at least two of the things jjo mentioned a
    multi-step process, which is better wrapped in an action

 2) putting it into an action means it can be tested and become part
    of the normal CI/QA process and won't break if (for example) ceph
    change their CLI