Werk #7144: docker_node_network: Fix missing network containers and host interface name

Component	Checks & agents
Title	docker_node_network: Fix missing network containers and host interface name
Date	Feb 14, 2019
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	1.5.0p12 Checkmk Community, Checkmk Pro, Checkmk Ultimate MT

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