Checkmk Werk 11147: agent_prometheus: handling of case where some promql queries return empty results

ID: 11147 Title: agent_prometheus: handling of case where some promql queries return empty results Component: Checks & agents Level: 1 Class: Bug fix Version: 1.7.0i1 In the previous version, the Kubernetes section of the Prometheus special agent raised errors when an expected query result was not present in the Prometheus instance. This change fixes this behaviour and correctly bypasses cases where the full information cannot be received.