[Merge] ~rcj/livecd-rootfs/+git/livecd-rootfs:bugfix/drop-snap-tool_bionic into livecd-rootfs:ubuntu/bionic

[Brian Murray]

Well I merged this and then found out that 2.525.40 already exists in bionic. It seems like somebody forgot to update the branch...
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https://code.launchpad.net/~rcj/livecd-rootfs/+git/livecd-rootfs/+merge/379691
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