Checkmk Werk 15748: heartbeat_crm_resources: Check promotable clone resources

ID: 15748 Title: heartbeat_crm_resources: Check promotable clone resources Component: Checks & agents Level: 1 Class: Bug fix Version: 2.3.0b1 Promotable clone sets weren't parsed correctly, which caused no resources to be found in the heartbeat_crm_resources check. Now, the parsing is fixed and the service show masters and slaves of the promotable clone set.