Checkmk Werk 10756: storeonce_servicesets.capacity: Fixed handling of old format

ID: 10756 Title: storeonce_servicesets.capacity: Fixed handling of old format Component: Checks & agents Level: 1 Class: Bug fix Version: 1.7.0i1 Since werk #6488, the check shows zero used capacity, if the API output contains the old format. Result was a WARN state of the service. This has been fixed.