Werk #13829: Fix wrong plugin and local check count

Component	Checks & agents
Title	Fix wrong plugin and local check count
Date	May 13, 2022
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	2.2.0b1 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk Cloud (CCE), Checkmk MSP (CME) 2.1.0b9 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)

The Check_MK Agent was not counting plugins and local checks that didn't specify a version. Now they are properly handled as unversioned.

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