[Merge] ~rcj/livecd-rootfs/+git/livecd-rootfs:feature/explicit_artifacts-bionic into livecd-rootfs:ubuntu/bionic

[Robert C Jennings]

I have tested this MP by building all targets in several separate groups across all architectures for the ubuntu-cpc projects and everything looked good.
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https://code.launchpad.net/~rcj/livecd-rootfs/+git/livecd-rootfs/+merge/371826
Your team Ubuntu Core Development Team is requested to review the proposed merge of ~rcj/livecd-rootfs/+git/livecd-rootfs:feature/explicit_artifacts-bionic into livecd-rootfs:ubuntu/bionic.