qemuimagetest: basic function to check bash exists

one test case to check  bash command availability on qemu target.

 Signed-off-by: veerabrahmam <veerabrahmamvr@huawei.com>

(From OE-Core rev: 357478b624b27fdfce25b6064b0f64717db75fa6)

Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

scripts/qemuimage-tests/tools/bash.sh

@@ -0,0 +1,17 @@
+#!/bin/sh
+# bash test script running in qemu 
+#
+# Author: veera <veerabrahmamvr@huawei.com>
+#
+# This file is licensed under the GNU General Public License,
+# Version 2.
+#
+
+which bash
+if [ $? -eq 0 ]; then
+ echo "QEMU: bash is exist in the target by default"
+ exit 0 
+else
+ echo "QEMU: No bash command in the qemu target"
+ exit 1
+fi