Backport of Add emit_tags_as_labels setting to envoy metrics service cfg into release/1.2.x

[hc-github-team-consul-core]

Backport

This PR is auto-generated from #184 to be assessed for backporting due to the inclusion of the label backport/1.2.

The below text is copied from the body of the original PR.

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This syncs the change from consul for the same: hashicorp/consul#17888

We need this to get envoy service metrics tagged with source and destination service meta. Without it, we get metrics from Envoy that do not have the upstream service name, partition, etc (it's just the FQDN). Eg:

cluster_ef15b5b5_consul_telemetry_collector_default_otlp_single_node_cluster_internal_d1779413_9e75_e538_94cc_8a6b0e6a5175_consul_upstream_cx_total

I made this by:

1. make copy-bootstrap-config sync'ing changes
2. manually updating pkg/consuldp/testdata/TestBootstrapConfig/hcp-metrics.golden that I guess isn't sync'ed

Testing & Reproduction steps

I made this change directly to consul-dataplane, deployed it to a personal Docker Hub repo, and ran consul-k8s install with it:

consul-k8s install -preset cloud -hcp-resource-id "$HCP_RESOURCE_ID" -demo \
    --set="global.enterpriseLicense.secretKey=key" \
    --set="global.enterpriseLicense.secretName=consul-license" \
    --set="global.logLevel=debug" \
    --set="global.imageConsulDataplane=jjtimmons/consul-dataplane:latest" \
    --set="metrics.enableTelemetryCollector=true" \
    --set="peering.enabled=true" \
    --set="server.replicas=3"

Checked Prometheus and we're getting all the labels:

{name="http_downstream_rq_active", cluster="josh-test-envoy-emit-tags-labels", consul_source_datacenter="josh-test-envoy-emit-tags-labels", consul_source_namespace="default", consul_source_partition="default", consul_source_service="frontend", consul_upstream_datacenter="josh-test-envoy-emit-tags-labels", consul_upstream_namespace="default", consul_upstream_partition="default", consul_upstream_service="consul-telemetry-collector", envoy_cluster="frontend", envoy_http_conn_manager_prefix="upstream", hcp_internal_id="00000000-e387-6f3e-286b-bc6f1e1b4f84", hcp_organization_id="00000000-06f2-45b3-96ba-e4b0ced62717", hcp_project_id="0000000-0087-4a1b-a9d6-b6030d55ea5c", local_cluster="frontend", namespace="default", node_id="frontend-f74f5f4d4-cw72z-frontend-sidecar-proxy", partition="default"}

Links

Envoy docs: https://www.envoyproxy.io/docs/envoy/latest/api-v3/config/metrics/v3/metrics_service.proto

If true, metrics will have their tags emitted as labels on the metrics objects sent to the MetricsService, and the tag extracted name will be used instead of the full name, which may contain values used by the tag extractor or additional tags added during stats creation.

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Overview of commits

• 244265c - 67aa49b - 955e2c6

[github-team-consul-core-pr-approver]

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