Comment 14 for bug 1799916

@chris.macnaughton I understand your reticence to backport features as that is understandably the normal policy. The reason I pushed for this backport is (a) it is proving very effective at resolving the problem of live migrating busy workloads in the field (without it they can take an inordinate amount of time) and (b) it does not change default behaviour at all i.e. anybody uptrading to a charm with this patch will so no difference in the way their services operate since the defaults are the same.