Fix to allow use of custom images in verification jobs

Change-Id: I9eb24cc4a4056290147ce0e0889f4b6cdd953e5a
diff --git a/jjb/pipeline/voltha-bbsim-tests.groovy b/jjb/pipeline/voltha-bbsim-tests.groovy
index 5ece060..0409988 100644
--- a/jjb/pipeline/voltha-bbsim-tests.groovy
+++ b/jjb/pipeline/voltha-bbsim-tests.groovy
@@ -33,7 +33,7 @@
     NAME="test"
     VOLTCONFIG="$HOME/.volt/config-$NAME"
     KUBECONFIG="$HOME/.kube/kind-config-voltha-$NAME"
-    EXTRA_HELM_FLAGS=" --set defaults.image_registry=mirror.registry.opennetworking.org/ "
+    EXTRA_HELM_FLAGS=" --set global.image_registry=mirror.registry.opennetworking.org/ "
   }
 
   stages {
@@ -215,7 +215,7 @@
            fi
 
            if [[ "${gerritProject}" == voltha-helm-charts ]]; then
-             export EXTRA_HELM_FLAGS+="--set defaults.image_tag=null "
+             export EXTRA_HELM_FLAGS+="--set global.image_tag=null "
            fi
 
            # Workflow-specific flags
@@ -343,7 +343,7 @@
            export BBSIM_CFG="configs/bbsim-sadis-dt.yaml"
 
            if [[ "${gerritProject}" == voltha-helm-charts ]]; then
-             export EXTRA_HELM_FLAGS+="--set defaults.image_tag=null "
+             export EXTRA_HELM_FLAGS+="--set global.image_tag=null "
            fi
 
            # start logging
@@ -405,7 +405,7 @@
            export BBSIM_CFG="configs/bbsim-sadis-tt.yaml"
 
            if [[ "${gerritProject}" == voltha-helm-charts ]]; then
-             export EXTRA_HELM_FLAGS+="--set defaults.image_tag=null "
+             export EXTRA_HELM_FLAGS+="--set global.image_tag=null "
            fi
 
            # start logging
diff --git a/jjb/pipeline/voltha-openonu-go-tests.groovy b/jjb/pipeline/voltha-openonu-go-tests.groovy
index cb9a0c2..d63b795 100755
--- a/jjb/pipeline/voltha-openonu-go-tests.groovy
+++ b/jjb/pipeline/voltha-openonu-go-tests.groovy
@@ -39,7 +39,7 @@
     CONFIG_SADIS="external"
     BBSIM_CFG="configs/bbsim-sadis-att.yaml"
     ROBOT_MISC_ARGS="-d $WORKSPACE/RobotLogs"
-    EXTRA_HELM_FLAGS=" --set defaults.image_registry=mirror.registry.opennetworking.org/ "
+    EXTRA_HELM_FLAGS=" --set global.image_registry=mirror.registry.opennetworking.org/ "
   }
   stages {
     stage('Clone kind-voltha') {