Comment 16 for bug 1845506

FYI - I was debugging this in the context of Ubuntu bug https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1845506
I think I found the root cause (see recent updates there)

The summary for now is:
- one of the labeling calls does not use append=true
- thereby the apparmor rules get re-rendered from XML throwing away former appended paths
- the snapshot case here represents two calls and the second throws away the content of the former one

If from here all goes well will submit patches some-when this week.