Werk #12931: mk_docker: Fix crash in mk_docker agent for Python2

Component Checks & Agents
Title mk_docker: Fix crash in mk_docker agent for Python2
Date Sep 7, 2021
Checkmk Editon Checkmk Raw (CRE)
Checkmk Version 2.0.0p10 2.1.0i1
Level Trivial Change
Class Bug Fix
Compatibility Compatible - no manual interaction needed

Docker agent plugin for Python2, mk_docker_2.py crashed when fetching df data. This resulted with an UNKNOWN state in docker_node_info check.

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