[2.3.0] Checkmk Werk 16874 created: host_config: skip host parent validation on host return

[//]: # (werk v2) # host_config: skip host parent validation on host return key | value ---------- | --- date | 2024-05-14T12:24:57+00:00 version | 2.3.0p3 class | fix edition | cre component | rest-api level | 1 compatible | yes Prior to this werk, the REST API always validated if a specified host parent is an existing host. This validation behavior differs to the mechanism of the UI where it is possible that a host has non existing hosts as parent. This werk modifies the behaviour of the REST API to skip the host existence validation when a host is returned.