Werk #4899: Don't fail WATO snapshot creation because of modified temporary files

Component	Setup
Title	Don't fail WATO snapshot creation because of modified temporary files
Date	Jun 26, 2017
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	1.5.0i1 Checkmk Community, Checkmk Pro, Checkmk Ultimate MT

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