[Merge] ~codyshepherd/livecd-rootfs/+git/livecd-rootfs:tarball-transform into livecd-rootfs:ubuntu/xenial

[Cody Shepherd]

Ok, here are manifests for buildd artifacts produced on 20201120 from these changes:

* First, we have the rootfs/lxd manifests (a manifest is produced for each tarball, but they are identical at this time): https://paste.ubuntu.com/p/ct6YZVcCxw/

* Second, the manifest of the bootable image: https://paste.ubuntu.com/p/6TxWWSNvXJ/

* And last, a diff of the package contents: https://paste.ubuntu.com/p/6MQsxKSNB3/

Are you satisfied with these image contents?
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https://code.launchpad.net/~codyshepherd/livecd-rootfs/+git/livecd-rootfs/+merge/392066
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