[Merge] ~xnox/livecd-rootfs:shim-signed-wants-pc into livecd-rootfs:ubuntu/master

[Steve Langasek]

Review: Approve

this is what we want; If I said grub-pc-bin instead, that was an error on my part.
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https://code.launchpad.net/~xnox/livecd-rootfs/+git/livecd-rootfs/+merge/392994
Your team Ubuntu Core Development Team is requested to review the proposed merge of ~xnox/livecd-rootfs:shim-signed-wants-pc into livecd-rootfs:ubuntu/master.