[Merge] ~lamoura/update-notifier:update-esm-service-name into update-notifier:master

[Łukasz Zemczak]

Hello! Is there a bug number for this change? That would be necessary for the SRU anyway.
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https://code.launchpad.net/~lamoura/update-notifier/+git/update-notifier/+merge/425659
Your team Ubuntu Core Development Team is requested to review the proposed merge of ~lamoura/update-notifier:update-esm-service-name into update-notifier:master.