print info before calculate auc in cube test

tools/serving_build.sh

@@ -193,6 +193,7 @@ function python_run_criteo_ctr_with_cube() {
             check_cmd "mkdir work_dir1 && cp cube/conf/cube.conf ./work_dir1/"    
             python test_server.py ctr_serving_model_kv &
             check_cmd "python test_client.py ctr_client_conf/serving_client_conf.prototxt ./ut_data >score"
+            tail -n 2 score
             AUC=$(tail -n 2  score | awk 'NR==1')
             VAR2="0.70"
             RES=$( echo "$AUC>$VAR2" | bc )