new variable to support voltha tests

Change-Id: I7bea27797334c908993802156f0cb872c8821ead
diff --git a/deployment-configs/flex-ocp-cord.yaml b/deployment-configs/flex-ocp-cord.yaml
index 5d75f06..4b35523 100644
--- a/deployment-configs/flex-ocp-cord.yaml
+++ b/deployment-configs/flex-ocp-cord.yaml
@@ -45,6 +45,7 @@
     user: 'root'
     pass: 'onl'
     fortygig: 'true'
+    serial: 'EC1838000853'
 
 onus:
   -
@@ -73,4 +74,4 @@
       dp_iface_ip: '10.8.3.1'
       dp_iface_gateway: '10.8.3.254'
       container_type: null
-      container_name: null
\ No newline at end of file
+      container_name: null