Werk #4478: systemtime: Now takes the agent data cache file age into account

Component	Checks & agents
Title	systemtime: Now takes the agent data cache file age into account
Date	Mar 1, 2017
Level	Trivial Change
Class	New Feature
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	1.5.0i1 Checkmk Community, Checkmk Pro, Checkmk Ultimate MT 1.4.0b4 Checkmk Community, Checkmk Pro, Checkmk Ultimate MT

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