Merge branch 'pratik/otel-phase7-native-metrics' into pratik/otel-phase8-log-correlation

docker/telemetry/TESTING.md

@@ -275,8 +275,10 @@ trace_peer=1
 trace_ledger=1
 
 [insight]
+# server=otel is the only load-bearing key here -- it selects OTelCollector.
+# The export endpoint comes from [telemetry] metrics_endpoint, and [insight]'s
+# own service_instance_id/service_name keys are ignored.
 server=otel
-endpoint=http://localhost:4318/v1/metrics
 
 [rpc_startup]
 { "command": "log_level", "severity": "info" }