Merge pull request #64755 from cloudbehl/grafana-rate-irate-fix

ceph-mixin: Update monitoring mixin

Reviewed-by: Aashish Sharma <aasharma@redhat.com>
Reviewed-by: SuperQ <superq@gmail.com>

diff --cc monitoring/ceph-mixin/dashboards/ceph-cluster.libsonnet
Simple merge

diff --cc monitoring/ceph-mixin/dashboards_out/ceph-cluster-advanced.json
Simple merge