[Merge] ~dbungert/livecd-rootfs:fsimage-layered into livecd-rootfs:ubuntu/master

[Dan Bungert]

The proposal to merge ~dbungert/livecd-rootfs:fsimage-layered into livecd-rootfs:ubuntu/master has been updated.

Commit message changed to:

desktop: install-sources.yaml type fsimage-layered

As recommended by mwhudson

For more details, see:
https://code.launchpad.net/~dbungert/livecd-rootfs/+git/livecd-rootfs/+merge/409163
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Your team Ubuntu Core Development Team is requested to review the proposed merge of ~dbungert/livecd-rootfs:fsimage-layered into livecd-rootfs:ubuntu/master.