[Merge] ~philroche/ubuntu/+source/gce-compute-image-packages/+git/gce-compute-image-packages:trusty into ~ubuntu-dev/ubuntu/+source/gce-compute-image-packages/+git/gce-compute-image-packages:trusty

[Dan Watkins]

Review: Approve

LGTM
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https://code.launchpad.net/~philroche/ubuntu/+source/gce-compute-image-packages/+git/gce-compute-image-packages/+merge/311823
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