Werk #15621: check_http: Fix Option Enforce IPv4

Component	Checks & agents
Title	check_http: Fix Option Enforce IPv4
Date	May 31, 2023
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	2.3.0b1 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk Cloud (CCE), Checkmk MSP (CME) 2.2.0p2 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk Cloud (CCE), Checkmk MSP (CME) 2.1.0p29 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)

The option Enforce IPv4 of the rule Check HTTP service did not enforce IPv4. With this Werk, Enforce IPv4 adds the option '-4' to the service check command. Existing rules are migrated to the new option Use any network address. Thus, their behaviour does not change.

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