[Merge] lp:~jonas-drange/ubuntu-push/fix-1628327 into lp:ubuntu-push

[Łukasz Zemczak]

Review: Approve

Looks good from my POV. But please note that I have no expertise in golang, so the GO bits would be nice to have reviewed by somone else as well. Packaging wise it's all good either way.
One thing: please mention the upstart dep addition to the commit message.
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https://code.launchpad.net/~jonas-drange/ubuntu-push/fix-1628327/+merge/307159
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