Comment 29 for bug 2012763

I've now added LXD to this as today I learned that LXD (which is what we use for launching VMs) doesn't use Ubuntu qemu but rather pulls directly from upstream when building the snap. So patching Ubuntu will help for those uses, but won't fix the broken certification test as that will never pick up the patched Ubuntu qemu. So we'll hae to sort out some sort of solution there as well.