Fix: Use the test server rpc/api to stop quagga.

Change-Id: I50fab4d7d5854cf4ccbe9881787a99dd4840b2f6
diff --git a/src/test/utils/CordTestServer.py b/src/test/utils/CordTestServer.py
index 1889536..299e7c2 100644
--- a/src/test/utils/CordTestServer.py
+++ b/src/test/utils/CordTestServer.py
@@ -67,7 +67,7 @@
 
     def stop_quagga(self):
         quaggaStop = QuaggaStopWrapper()
-        time.sleep(2)
+        time.sleep(5)
         try:
             quagga_config_gen = '{}/testrib_gen.conf'.format(Quagga.host_quagga_config)
             os.unlink(quagga_config_gen)