[dts] [PATCH V1] fix ptpclient case failed because of tester and dut time zone different

[xu,huilong]

ptpclint test case will sync time with tester and dut. But when tester and dut time zone not different.
test time and dut time not different, so use TZ='Asia/Shanghai' time zone for get tester and dut time

Signed-off-by: xu,huilong <huilongx.xu at intel.com>
---
 tests/TestSuite_ptpclient.py | 13 ++++---------
 1 file changed, 4 insertions(+), 9 deletions(-)

diff --git a/tests/TestSuite_ptpclient.py b/tests/TestSuite_ptpclient.py
index f038bef..c469114 100644
--- a/tests/TestSuite_ptpclient.py
+++ b/tests/TestSuite_ptpclient.py
@@ -146,15 +146,10 @@ class TestPtpClient(TestCase):
 
         self.creat_table(Delta_us)
 
-        tester_out = self.tester.send_expect("date '+%Y-%m-%d %H:%M'", "# ")
-        dut_out = self.dut.send_expect("date '+%Y-%m-%d %H:%M'", "# ")
-
-        if tester_out == dut_out:
-            self.verify(tester_out == dut_out, "the DUT time synchronous error")
-        else:
-            tester_out = self.tester.send_expect("date '+%Y-%m-%d %H:%M'", "# ")
-            dut_out = self.dut.send_expect("date '+%Y-%m-%d %H:%M'", "# ")
-            self.verify(tester_out == dut_out, "the DUT time synchronous error")
+        tester_out = self.tester.send_expect("TZ='Asia/Shanghai'TZ='Asia/Shanghai' date '+%Y-%m-%d %H:%M'", "# ")
+        dut_out = self.dut.send_expect("TZ='Asia/Shanghai' date '+%Y-%m-%d %H:%M'", "# ")
+
+        self.verify(tester_out == dut_out, "the DUT time synchronous error")
 
     def tear_down(self):
         """
-- 
1.9.3