Werk #8582: Fix hint for how rule sets are interpreted for four rule sets. Were invalid type 'list'

Component	Setup
Title	Fix hint for how rule sets are interpreted for four rule sets. Were invalid type 'list'
Date	May 19, 2016
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	1.4.0i1 Checkmk Enterprise (CEE), Checkmk MSP (CME)

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