Make voltha container mode as the default in cord-tester voltha integration

Change-Id: Ie37e3e6ac9e25f7b358e2e3680e8f1265be34d46
diff --git a/src/test/utils/TestManifest.py b/src/test/utils/TestManifest.py
index 5b4cb0a..17bc370 100644
--- a/src/test/utils/TestManifest.py
+++ b/src/test/utils/TestManifest.py
@@ -103,7 +103,7 @@
             if self.voltha_loc:
                 voltha_enable = True
             self.voltha_enable = data.get('voltha_enable', voltha_enable)
-            self.voltha_container_mode = data.get('voltha_container_mode', False)
+            self.voltha_container_mode = data.get('voltha_container_mode', True)
             self.expose_port = data.get('expose_port', False)
             if self.voltha_enable and self.voltha_container_mode:
                 self.expose_port = True