Werk #7000: liebert.include: Fixed discovery of empty sensor names

Component Checks & agents
Title liebert.include: Fixed discovery of empty sensor names
Date Jan 8, 2019
Checkmk Edition Checkmk Raw (CRE)
Checkmk Version 1.5.0p11 1.6.0b1
Level Trivial Change
Class Bug Fix
Compatibility Compatible - no manual interaction needed

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