[Merge] ~laney/software-properties:token-pass-empty-string-not-none into software-properties:ubuntu/master

[Sebastien Bacher]

Review: Approve

That makes sense, thx!
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https://code.launchpad.net/~laney/software-properties/+git/software-properties/+merge/367899
Your team Ubuntu Core Development Team is requested to review the proposed merge of ~laney/software-properties:token-pass-empty-string-not-none into software-properties:ubuntu/master.