Werk #13008: Fix haproxy status on DOWN 1/2 and MAINT(via)

Component	Checks & agents
Title	Fix haproxy status on DOWN 1/2 and MAINT(via)
Date	Apr 13, 2022
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	2.2.0b1 Checkmk Enterprise (CEE), Checkmk Cloud (CCE), Checkmk MSP (CME) 2.1.0b6 Checkmk Enterprise (CEE), Checkmk MSP (CME)

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