wait nrf process before vpp getting ready

scripts/run.sh

@@ -67,8 +67,19 @@ else
     exit 1
 fi
 
+while : 
+do
+   echo "waiting for vpp-upf service"
+   RES=$(bin/vppctl sh upf specification release | awk {'print $3'})
+   echo $RES
+   if [[ $RES =~ 16 ]]; then
+       echo "vpp-upf service is running now"
+       break
+   fi
+   sleep 3
+done
+
 if [[ ${REGISTER_NRF} == "yes" ]];then
-    sleep 5
     NRF_APP="$base/bin/nrf_client.py"
     NRF_ARGS=" --nrf_ip="$NRF_IP_ADDR" --nrf_port="$NRF_PORT" --http_version="$HTTP_VERSION
     python $NRF_APP $NRF_ARGS