Werk #10111: APT: Fix service discovery when getting unexpected output from apt

Component	Checks & agents
Title	APT: Fix service discovery when getting unexpected output from apt
Date	Sep 23, 2019
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	2.0.0i1 Checkmk Community, Checkmk Pro, Checkmk Ultimate MT 1.6.0 Checkmk Community, Checkmk Pro, Checkmk Ultimate MT

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