Werk #4558: Set correct file permissions for WATO snapshots

Component	Setup
Title	Set correct file permissions for WATO snapshots
Date	Apr 20, 2017
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	1.2.8p22 Checkmk Community, Checkmk Pro, Checkmk Ultimate MT

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