Adding extraHelmFlags option to voltha-scale-measurements job to allow customizations

Change-Id: I7c62e15632bec52911df58039d534b9789d32da8
diff --git a/jjb/voltha-scale.yaml b/jjb/voltha-scale.yaml
index 33c33c5..af87762 100644
--- a/jjb/voltha-scale.yaml
+++ b/jjb/voltha-scale.yaml
@@ -257,6 +257,11 @@
           description: 'Custom image selection for VOLTHA (repo:tag)'
 
       - string:
+          name: ofAgentImg
+          default: 'voltha/voltha-ofagent:master'
+          description: 'Custom image selection for OfAgent (repo:tag)'
+
+      - string:
           name: openoltAdapterImg
           default: voltha/voltha-openolt-adapter:master
           description: 'Custom image selection for Openolt Adapter (repo:tag)'
@@ -266,6 +271,16 @@
           default: voltha/voltha-openonu-adapter:master
           description: 'Custom image selection for Openonu Adapter (repo:tag)'
 
+      - string:
+          name: onosImg
+          default: voltha/voltha-onos:4.0.1
+          description: 'Custom image selection for Openonu Adapter (repo:tag)'
+
+      - string:
+          name: extraHelmFlags
+          default: ''
+          description: 'Any extra helm parameters you want (passed to every helm install command)'
+
     project-type: pipeline
     concurrent: false
 
@@ -386,4 +401,4 @@
     project-type: pipeline
     concurrent: false
 
-    dsl: !include-raw-escape: pipeline/{pipeline-script}
\ No newline at end of file
+    dsl: !include-raw-escape: pipeline/{pipeline-script}