[Merge] ~davidkrauser/livecd-rootfs/+git/livecd-rootfs:buildd-bootable/bionic into livecd-rootfs:ubuntu/bionic

[Robert C Jennings]

Review: Approve

I reviewed the prior MP that Cody had files and approved it except for the changelog needed updating after a rebase; which David has done here.  I've reviewed this code again and diff'ed the commits between the branches to confirm that only the changelog has changed between them.
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https://code.launchpad.net/~davidkrauser/livecd-rootfs/+git/livecd-rootfs/+merge/380908
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