[2.2.0] Checkmk Werk 16384 created: notification rule: allow for non builtin service levels

Title: notification rule: allow for non builtin service levels Class: fix Compatible: incomp Component: rest-api Date: 1705490346 Edition: cre Level: 1 Version: 2.2.0p20 When configuring a notification rule via the Rest API, you could not set the value for "match_service_levels" to anything but the default service levels. This werk addresses this issue by now allowing any of the service levels configured to be used. This change mean that there is a change to the request schema. Previously, we accepeted the service level string value, whereas now we accept the integer value. Previous schema C+: {"match_service_levels": { "state": "enabled", "value": {"from_level": "silver", "to_level": "gold"} } } C-: New schema C+: {"match_service_levels: { "state": "enabled", "value": {"from_level" 10, "to_level": 20} } } C-: