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Werk #8882: Fix invalid rule match analyzation in WATO

Component Setup
Title Fix invalid rule match analyzation in WATO
Date Sep 4, 2019
Level Trivial Change
Class Bug Fix
Compatibility Compatible - no manual interaction needed
Checkmk versions & editions
2.0.0i1 Checkmk Community, Checkmk Pro, Checkmk Ultimate MT
1.6.0b9 Checkmk Community, Checkmk Pro, Checkmk Ultimate MT

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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