Werk #3754: Cluster nodes are now correctly validated for invalid characters

Component	Setup
Title	Cluster nodes are now correctly validated for invalid characters
Date	Aug 3, 2016
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	1.4.0i1 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME) 1.2.8p9 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)

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