[monitoring-plugins] Merge remote-tracking branch 'upstream/pr/1456'

[Jan Wagner]

 Module: monitoring-plugins
 Branch: master
 Commit: d9a1fb15dd60935cf1655e6b9786b28e899c8dc8
 Author: Jan Wagner <w...@cyconet.org>
   Date: Wed Jan  4 13:29:00 2017 +0100
    URL: 
https://www.monitoring-plugins.org/repositories/monitoring-plugins/commit/?id=d9a1fb1

Merge remote-tracking branch 'upstream/pr/1456'

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