[Merge] lp:~thomas-voss/location-service/fix-match-rule-leak into lp:location-service/15.04

[Alberto Mardegan]

Review: Approve

The last chunk of changes looks unrelated and it's not obvious whether what it's solving. But if that's not an accidental change, it all looks good to me.
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https://code.launchpad.net/~thomas-voss/location-service/fix-match-rule-leak/+merge/277179
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