Implement support to report error,warning logs after every test case run.

Change-Id: Id5710e9ee3497b4bc1030d7fa69c182d2e1348c6
diff --git a/src/test/vrouter/vrouterTest.py b/src/test/vrouter/vrouterTest.py
index 9ca696a..7b416a6 100644
--- a/src/test/vrouter/vrouterTest.py
+++ b/src/test/vrouter/vrouterTest.py
@@ -24,6 +24,7 @@
 from CordContainer import Container, Onos, Quagga
 from CordTestServer import cord_test_onos_restart, cord_test_quagga_restart, cord_test_quagga_stop, cord_test_quagga_shell
 from portmaps import g_subscriber_port_map
+from CordLogger import CordLogger
 import threading
 import time
 import os
@@ -38,7 +39,7 @@
 
 log.setLevel('INFO')
 
-class vrouter_exchange(unittest.TestCase):
+class vrouter_exchange(CordLogger):
 
     apps = ('org.onosproject.vrouter', 'org.onosproject.fwd')
     device_id = 'of:' + get_mac()