Comment 2 for bug 1889654

My bug fix: https://review.opendev.org/#/c/744536/

Alex and I had a further discussion about the vault charm that I will summarize here. The changes mentioned in comment #1 were necessary because the charm runs state changing functions during update-status hook executions. Another approach might be to revert the original changes and stop the charm from executing these functions during an update-status hook. This might also be a good 20.10 goal for the charm.