[Merge] livecd-rootfs:tune2fs into livecd-rootfs:ubuntu/master

[Dimitri John Ledkov]

Added https://discourse.ubuntu.com/t/lunar-lobster-release-notes/31910#:~:text=Cloud%20Images%20updated%20default%20fstab%20entry%20for%20ext4
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https://code.launchpad.net/~ubuntu-core-dev/livecd-rootfs/+git/livecd-rootfs/+merge/436977
Your team Ubuntu Core Development Team is requested to review the proposed merge of livecd-rootfs:tune2fs into livecd-rootfs:ubuntu/master.