[Merge] ~rcj/livecd-rootfs/+git/livecd-rootfs:bugfix/snapd_for_core18 into livecd-rootfs:ubuntu/master

[Dimitri John Ledkov]

Specifically this would fix https://bugs.launchpad.net/ubuntu/+source/livecd-rootfs/+bug/1871912 and probably other bugs.
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https://code.launchpad.net/~rcj/livecd-rootfs/+git/livecd-rootfs/+merge/382041
Your team Ubuntu Core Development Team is requested to review the proposed merge of ~rcj/livecd-rootfs/+git/livecd-rootfs:bugfix/snapd_for_core18 into livecd-rootfs:ubuntu/master.