Revert "fix: remove parts of trace_protocol and telemetry that were overlooked"

This reverts commit 9d24211d9d.

benchmarking/k8s-benchmark/stack-configmap.yaml

@@ -9,6 +9,7 @@ data:
     - inference
     - files
     - safety
+    - telemetry
     - tool_runtime
     - vector_io
     providers:
@@ -66,6 +67,12 @@ data:
             db: ${env.POSTGRES_DB:=llamastack}
             user: ${env.POSTGRES_USER:=llamastack}
             password: ${env.POSTGRES_PASSWORD:=llamastack}
+      telemetry:
+      - provider_id: meta-reference
+        provider_type: inline::meta-reference
+        config:
+          service_name: "${env.OTEL_SERVICE_NAME:=\u200B}"
+          sinks: ${env.TELEMETRY_SINKS:=console}
       tool_runtime:
       - provider_id: brave-search
         provider_type: remote::brave-search