Check_MK Werk 7065: k8s_stats: fix crashes regarding timestamp parsing

ID: 7065 Title: k8s_stats: fix crashes regarding timestamp parsing Component: Checks & agents Level: 1 Class: Bug fix Version: 1.6.0i1 The Kubernetes API provides timestamps for the k8s_stats checks in the RFC3339Nano format with different timezones and a varying number of trailing zeros in the seconds field. This lead to a crash of the k8s_stats.network check. To resolve this issues the timestamps are now converted to unix timestamps in the special agent.