[Merge] ~tobijk/livecd-rootfs/+git/livecd-rootfs:feature/parallelization-pkg-version-fixing into livecd-rootfs:ubuntu/master

[Tobias Koch]

Note that this uses the publication time of the InRelease files (e.g. what is in the Last-Modified header). There is a small race here between the file being generated and actually published, but this can be avoided by simply backdating T a few minutes, when you start to build.
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https://code.launchpad.net/~tobijk/livecd-rootfs/+git/livecd-rootfs/+merge/360984
Your team Ubuntu Core Development Team is requested to review the proposed merge of ~tobijk/livecd-rootfs/+git/livecd-rootfs:feature/parallelization-pkg-version-fixing into livecd-rootfs:ubuntu/master.