Checkmk Werk 15427: host_tag_group: introducing minLength validation to create and edit endpoints

ID: 15427 Title: host_tag_group: introducing minLength validation to create and edit endpoints Component: REST API Level: 1 Class: Bug fix Version: 2.3.0b1 Prior to this werk, the user was allowed to call the create and edit host tag group endpoints with an empty list for the tags. This caused a 500 error. This werk restricts this and raises a 400 error instead.