Checkmk Werk 12206: downtime_script: changing script to use REST API endpoints

ID: 12206 Title: downtime_script: changing script to use REST API endpoints Component: Core & setup Level: 1 Class: New feature Version: 2.1.0i1 This werk rewrites the downtime script to make all calls use endpoints of the REST API. The user can set and remove downtimes for host, services, hostgroup and servicegroup.