update ci

tools/serving_build.sh

@@ -827,10 +827,6 @@ EOF
             ps -ef | grep "pipeline_server" | grep -v grep | awk '{print $2}' | xargs kill
             kill_process_by_port 18080
             
-            kill_server_process
-            kill_process_by_port 9292
-            kill_process_by_port 9393
-
             # test: process servicer & thread op
             pip uninstall grpcio -y
             pip install grpcio --no-binary=grpcio
@@ -850,6 +846,10 @@ EOF
             ps -ef | grep "pipeline_server" | grep -v grep | awk '{print $2}' | xargs kill
             kill_process_by_port 18080
 
+            kill_server_process
+            kill_process_by_port 9292
+            kill_process_by_port 9393
+
             # start paddle serving service (grpc)
             python -m paddle_serving_server.serve --model imdb_cnn_model --port 9292 --use_multilang --workdir test9292 &> cnn.log &
             python -m paddle_serving_server.serve --model imdb_bow_model --port 9393 --use_multilang --workdir test9393 &> bow.log &