[Merge] ~mwhudson/livecd-rootfs/+git/livecd-rootfs:lp-1952093-focal into livecd-rootfs:ubuntu/focal

[Paride Legovini]

Review: Approve

Admittedly I don't have the full picture in mind here, but the change itself LGTM. It assumes there are no spaces in $OVERLAY_ROOT or $snap, but that should be safe. Thanks!
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https://code.launchpad.net/~mwhudson/livecd-rootfs/+git/livecd-rootfs/+merge/412361
Your team Ubuntu Core Development Team is requested to review the proposed merge of ~mwhudson/livecd-rootfs/+git/livecd-rootfs:lp-1952093-focal into livecd-rootfs:ubuntu/focal.