Werk #15012: Add outlet label for raritan px outlet check

Component	Checks & agents
Title	Add outlet label for raritan px outlet check
Date	Nov 17, 2022
Level	Trivial Change
Class	New Feature
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	2.2.0b1 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk Cloud (CCE), Checkmk MSP (CME) 2.1.0p17 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)

We now add the outlet label in the "raritan_px_outlets" check.

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