[Merge] ~ikapelyukhin/livecd-rootfs/+git/livecd-rootfs:master-amd64-increase-disk-uefi-size into livecd-rootfs:ubuntu/master

[Ivan Kapelyukhin]

I've added details about the kernel roll to the commit message.
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https://code.launchpad.net/~ikapelyukhin/livecd-rootfs/+git/livecd-rootfs/+merge/429913
Your team Ubuntu Core Development Team is requested to review the proposed merge of ~ikapelyukhin/livecd-rootfs/+git/livecd-rootfs:master-amd64-increase-disk-uefi-size into livecd-rootfs:ubuntu/master.