feat(kuma-cp) add chart for L7 metrcics

[lobkovilya]

Summary

Kuma Dataplane

• Latency

  sum(histogram_quantile(0.99, rate(envoy_cluster_upstream_rq_time_bucket{mesh="$mesh",envoy_cluster_name=~"localhost_.*",dataplane="$dataplane"}[1m])))
  

• Traffic

  sum(rate(envoy_cluster_upstream_rq_total{mesh="$mesh",envoy_cluster_name=~"localhost_.*",dataplane="$dataplane"}[1m]))
  

  sum(rate(envoy_cluster_upstream_rq_total{mesh="$mesh",dataplane="$dataplane",envoy_cluster_name!~"localhost_.*", envoy_cluster_name!="kuma_envoy_admin"}[1m]))
  

• Status codes

  sum(rate(envoy_cluster_external_upstream_rq_xx{mesh="$mesh",dataplane="$dataplane", envoy_cluster_name=~"localhost_.*"}[1m])) by (envoy_response_code_class)
  

  sum(rate(envoy_cluster_external_upstream_rq_xx{mesh="$mesh",dataplane="$dataplane", envoy_cluster_name!~"localhost_.*", envoy_cluster_name!="kuma_envoy_admin"}[1m])) by (envoy_response_code_class)
  

Kuma Service to Service

• Latency

  max(histogram_quantile(0.99, rate(envoy_cluster_upstream_rq_time_bucket{kuma_io_service="$source_service",mesh="$mesh",envoy_cluster_name="$destination_cluster"}[1m])))
  

• Traffic

   sum(rate(envoy_cluster_upstream_rq_total{mesh="$mesh",kuma_io_service="$source_service", envoy_cluster_name="$destination_cluster"}[1m]))
  

• Status codes

  sum(rate(envoy_cluster_external_upstream_rq_xx{mesh="$mesh",kuma_io_service="$source_service", envoy_cluster_name="$destination_cluster"}[1m])) by (envoy_response_code_class)
  

Full changelog

• new HTTP row for Kuma Dataplane dashboard
• new HTTP row for Kuma Service to Service dashboard

Issues resolved

Fix #XXX

Documentation

• Link to the website documentation PR