[2.3.0] Checkmk Werk 16187 created: Restrict the group name pattern to disallow incompatible names

Title: Restrict the group name pattern to disallow incompatible names Class: fix Compatible: compat Component: wato Date: 1697196846 Edition: cre Level: 1 Version: 2.3.0b1 Before this werk it was possible to create groups with names that could not be accessed from the REST API. This werk restricts the group name pattern and prevents the creation of incompatible groups names like '.' and '..' from both WATO and the REST API.