[2.4.0] Checkmk Werk 17240 created: Splunk: improve health service summary

[//]: # (werk v2) # Splunk: improve health service summary key | value ---------- | --- date | 2024-08-14T07:54:23+00:00 version | 2.4.0b1 class | feature edition | cre component | checks level | 1 compatible | yes The previous service summary output: ```console Overall state: red, File monitor_lnput: red, Index processor: green, Batchreader-0 - State: green Buckets - State: green Tailreader-0 - State: red ``` The new service summary output: ```console Overall state: red, File monitor input: red (Batchreader-0: green, Tailreader-0: red), Index processor: green (Buckets: green) ```