[Merge] ~mwhudson/livecd-rootfs/+git/livecd-rootfs:ubuntu-core-installer into livecd-rootfs:ubuntu/master

[Michael Hudson-Doyle]

I tested this again and fixed a few issues so it now works. Did you know ubuntu-server does not depend on ubuntu-server-minimal?
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https://code.launchpad.net/~mwhudson/livecd-rootfs/+git/livecd-rootfs/+merge/466280
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