Werk #3846: Nagios: define_contactgroups = False is handled correctly again

Component	Core & setup
Title	Nagios: define_contactgroups = False is handled correctly again
Date	Sep 1, 2016
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	1.4.0i1 Checkmk Community, Checkmk Pro, Checkmk Ultimate MT 1.2.8p10 Checkmk Community, Checkmk Pro, Checkmk Ultimate MT

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