[Merge] ~rbalint/livecd-rootfs:ubuntu/master into livecd-rootfs:ubuntu/master

[Balint Reczey]

Autopkgtest passing:

https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-disco-rbalint-scratch/disco/amd64/l/livecd-rootfs/20190410_143136_52781@/log.gz

...
Build results for project: 'ubuntu-cpc' subproject: '' template: 'ubuntu-cpc' in /tmp/tmp.WKSuWKFrfB/ubuntu-cpc::ubuntu-cpc
80K	auto
3.5G	binary
280K	binary.log
16K	binary.packages
325M	cache
1.1G	chroot
0	chroot.headers
16K	chroot.packages.install
16K	chroot.packages.live
25M	config
476M	livecd.ubuntu-cpc.img
0	livecd.ubuntu-cpc.initrd
0	livecd.ubuntu-cpc.kernel
461M	livecd.ubuntu-cpc.ova
16K	livecd.ubuntu-cpc.rootfs.manifest
282M	livecd.ubuntu-cpc.rootfs.tar.xz
323M	livecd.ubuntu-cpc.squashfs
16K	livecd.ubuntu-cpc.squashfs.manifest
455M	livecd.ubuntu-cpc.vagrant.box
461M	livecd.ubuntu-cpc.vmdk
12K	local
838M	rootfs.dir
16K	rootfs.dir.manifest
252K	ubuntu-cpc

...
-- 
https://code.launchpad.net/~rbalint/livecd-rootfs/+git/livecd-rootfs/+merge/365810
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