Werk #7837: citrix_controller: Fixed several problems if some values are missing

Component Checks & agents
Title citrix_controller: Fixed several problems if some values are missing
Date Jun 18, 2019
Checkmk Edition Checkmk Raw (CRE)
Checkmk Version 1.5.0p19 1.6.0b3 2.0.0i1
Level Trivial Change
Class Bug Fix
Compatibility Compatible - no manual interaction needed

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