Merge pull request #41880 from david-caro/fix_cluster_grafana_dashboard

monitoring/grafana/cluster: use per-unit max and limit values

Reviewed-by: Aashish Sharma <aasharma@redhat.com>
Reviewed-by: Ernesto Puerta <epuertat@redhat.com>
Reviewed-by: p-se <NOT@FOUND>

diff --cc monitoring/grafana/dashboards/ceph-cluster.json
Simple merge