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Werk #12300: Fix missing special agent in cluster configuration

Component Core & setup
Title Fix missing special agent in cluster configuration
Date Apr 27, 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
2.0.0p4 Checkmk Community, Checkmk Pro, Checkmk Ultimate MT

This fix is only necessary for Nagios.

Clusters containing nodes with a special agent would crash with the traceback

File "/omd/sites/core/lib/python3/cmk/base/checkers/programs.py", line 266, in _make_source_args info_func = config.special_agent_info[special_agent_id]

because the special agent was missing from the configuration of the cluster.

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