[Merge] ~simpoir/livecd-rootfs/+git/livecd-rootfs:kinetic-update-apparmor-feat into livecd-rootfs:ubuntu/master

[Thomas Bechtold]

> "It happens infrequently" is a terrible rationale if it's not on anyone's radar to make sure livecd-rootfs gets updated when it does!

@Steve as Simon said, the CPC team has it on its radar. We have automated testing for this.
But agreed that getting rid of the sys tree copy would be good. 
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https://code.launchpad.net/~simpoir/livecd-rootfs/+git/livecd-rootfs/+merge/431611
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