Using custom ETCD/KAFKA charts in the scale pipeline

Change-Id: Ibe990d9fac7d06f8cf58f76327352671b236f34c
diff --git a/jjb/pipeline/voltha-scale-multi-stack.groovy b/jjb/pipeline/voltha-scale-multi-stack.groovy
index 5a6657f..c8d1d04 100644
--- a/jjb/pipeline/voltha-scale-multi-stack.groovy
+++ b/jjb/pipeline/voltha-scale-multi-stack.groovy
@@ -198,6 +198,9 @@
         sh returnStdout: false, script: '''
           cd $WORKSPACE/kind-voltha/
 
+          ETCD_CHART=$HOME/teone/helm-charts/etcd
+          KAFKA_CHART=$HOME/teone/helm-charts/kafka
+
           # KAFKA config
           NUM_OF_KAFKA=${kafkaReplicas}
           EXTRA_HELM_FLAGS+=' --set prometheus.kafka.enabled=true,prometheus.operator.enabled=true,prometheus.jmx.enabled=true,prometheus.operator.serviceMonitor.namespace=default '