Werk #3744: synology_info: Now also displays OS version

Component	Checks & agents
Title	synology_info: Now also displays OS version
Date	Sep 7, 2016
Level	Trivial Change
Class	New Feature
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	1.4.0i1 Checkmk Community, Checkmk Pro, Checkmk Ultimate MT

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