Grafana k8s Monitoring (Helm Chart)

What's Changed

• Make the formatAsJson actually do something and add config validation. by @petewall in https://github.com/grafana/k8s-monitoring-helm/pull/633
• Actually include the new Java profiles config into the config file by @petewall in https://github.com/grafana/k8s-monitoring-helm/pull/638

Full Changelog: https://github.com/grafana/k8s-monitoring-helm/compare/v1.4.1...v1.4.2