[Merge] ~xnox/livecd-rootfs:disk-images-all-the-things into livecd-rootfs:ubuntu/master

[Dimitri John Ledkov]

amd64 built successfully without failures.

arm64 built, and booted in canonistack with shim. Specifically the shim vendor keys are now visible in the kernel .platform keyring.

riscv64 is still building.
-- 
https://code.launchpad.net/~xnox/livecd-rootfs/+git/livecd-rootfs/+merge/394034
Your team Ubuntu Core Development Team is requested to review the proposed merge of ~xnox/livecd-rootfs:disk-images-all-the-things into livecd-rootfs:ubuntu/master.