Werk #8882: Fix invalid rule match analyzation in WATO

Komponente Setup
Titel Fix invalid rule match analyzation in WATO
Datum 04.09.2019
Checkmk Edition Checkmk Raw (CRE)
Checkmk-Version 1.6.0b9 2.0.0i1
Level Kleine Änderung
Klasse Bugfix
Kompatibilität Kompatibel - benötigt kein manuelles Eingreifen

The "Parameters of host/service" page and ruleset lists showed an invalid match result for rules which value evaluates to None. For binary rulesets (the ones that only have yes/no as value) the result was also not displayed correctly.

The ruleset matching of Checkmk during checking was not affected by this issue.

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