[2.4.0] Checkmk Werk 17058 created: Fix service discovery for hosts with more than 237 characters

[//]: # (werk v2) # Fix service discovery for hosts with more than 237 characters key | value ---------- | --- date | 2024-06-26T07:53:25+00:00 version | 2.4.0b1 class | fix edition | cre component | wato level | 1 compatible | yes Werk #16219 limited the length of hostnames to a maximum length of 253 characters. Still, hostnames with a length greater 237 could lead to an error in the service discovery like "[Errno 36] File name too long: ...". This has been fixed and all service discovery background job directories will be converted on update.