Set telemetry session id

Author: bwoebi

datadog-sidecar/src/service/sidecar_server.rs

@@ -651,6 +651,7 @@ impl SidecarInterface for ConnectionSidecarHandler {
             cfg.telemetry_heartbeat_interval = config.telemetry_heartbeat_interval;
             cfg.telemetry_extended_heartbeat_interval =
                 config.telemetry_extended_heartbeat_interval;
+            cfg.session_id = self.session_id.clone();
         });
         session.modify_trace_config(|cfg| {
             let endpoint = get_product_endpoint(