Grafana k8s Monitoring (Helm Chart)

What's Changed

• backport changes to 2.x by @rlankfo in https://github.com/grafana/k8s-monitoring-helm/pull/1875
• prepare release 2.0.42 by @rlankfo in https://github.com/grafana/k8s-monitoring-helm/pull/1876

Full Changelog: https://github.com/grafana/k8s-monitoring-helm/compare/k8s-monitoring-2.0.41...k8s-monitoring-2.0.42