[Merge] ~waveform/livecd-rootfs:fix-swapfile into livecd-rootfs:ubuntu/master

[Łukasz Zemczak]

Review: Approve

Looks fine. The changelog entry needs to be UNRELEASED until actually released! But I'll fix that after the merge. I'll also assume that fallocate is now good with EXT4 in the latest kernels.
-- 
https://code.launchpad.net/~waveform/livecd-rootfs/+git/livecd-rootfs/+merge/415625
Your team Ubuntu Core Development Team is subscribed to branch livecd-rootfs:ubuntu/master.