Werk #16807: Ignore unknown "Disabled checks" during update config

Component	Checks & agents
Title	Ignore unknown "Disabled checks" during update config
Date	Apr 24, 2024
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	2.4.0b1 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT 2.3.0p1 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT 2.2.0p35 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT

If users had disabled checks that have since been removed or are temporarily unavailable (due to disabled MKPs for instance), they would be prompted with a message like

WARNING: Invalid rule configuration detected (Ruleset: ignored_checks, Title: Disabled checks, Folder: ,
-| Rule nr: 1, Exception: ifoperstatus is not an allowed value)

These invalid values are ignored now. They do no harm and they are dropped upon editing the rule.

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