Werk #5972: docker_node_info: Fixed crash when a node with older version reports null labels

Component Checks & agents
Title docker_node_info: Fixed crash when a node with older version reports null labels
Date Apr 11, 2018
Checkmk Edition Checkmk Raw (CRE)
Checkmk Version 1.5.0b2 1.6.0b1
Level Trivial Change
Class Bug Fix
Compatibility Compatible - no manual interaction needed

The inventory plugin made the Check_MK and Check_MK Inventory services crash when working with an older docker version.

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