Grafana k8s Monitoring (Helm Chart)

What's Changed

• Prometheus Operator Relabelings by @bentonam in https://github.com/grafana/k8s-monitoring-helm/pull/527
• Add the ability to set stage blocks for cluster events by @petewall in https://github.com/grafana/k8s-monitoring-helm/pull/533

Full Changelog: https://github.com/grafana/k8s-monitoring-helm/compare/v1.0.11...v1.0.12