Checkmk Werk 8911: Fix CRIT criterion for k8s_pod_container

ID: 8911 Title: Fix CRIT criterion for k8s_pod_container Component: Checks & agents Level: 1 Class: Bug fix Version: 1.7.0i1 Cleanly terminated containers would erroneously mark the check CRIT. Now, the check is only CRIT when a container exited with a non-zero error code, otherwise it remains OK. The check now reports more information: the number of running containers, the number of waiting containers, and the number of terminated containers.