Use buildNode to refer to pod

Change-Id: Iee145ff14a8c7ee90d59e45c1589f9b756fb209d
diff --git a/jjb/voltha-e2e.yaml b/jjb/voltha-e2e.yaml
index 062e9f3..f7534a7 100644
--- a/jjb/voltha-e2e.yaml
+++ b/jjb/voltha-e2e.yaml
@@ -197,9 +197,9 @@
 
     parameters:
       - string:
-          name: TestNodeName
+          name: buildNode
           default: '{testvm}'
-          description: 'Jenkins node name of TestVM Node'
+          description: 'Pod management node'
 
       - string:
           name: manifestUrl