add loop.sh for test

tests/script/loop.sh

+#!/bin/bash
+
+##################################################
+# 
+# Do simulation test 
+#
+##################################################
+
+set +e
+#set -x
+
+CMD_NAME=
+LOOP_TIMES=5
+
+while getopts "f:t:" arg
+do
+  case $arg in
+    f)
+      CMD_NAME=$OPTARG
+      ;;
+    t)
+      LOOP_TIMES=$OPTARG
+      ;;
+    ?)
+      echo "unknow argument"
+      ;;
+  esac
+done
+
+echo LOOP_TIMES ${LOOP_TIMES}
+echo CMD_NAME ${CMD_NAME}
+
+for (( i=0; i<$LOOP_TIMES; i++ ))
+do
+    echo loop $i
+    echo cmd $CMD_NAME
+    $CMD_NAME
+done