Werk #13505: Fix simulation mode

Component	Checks & agents
Title	Fix simulation mode
Date	Dec 2, 2021
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	2.1.0b1 Checkmk Community, Checkmk Pro, Checkmk Ultimate MT 2.0.0p17 Checkmk Community, Checkmk Pro, Checkmk Ultimate MT

If the simulation mode was activated, existing cache files were not used. The hosts contacted IP address 127.0.0.1 instead.

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