Using the correct voltha-onos image in TT scale

Change-Id: Ia94a1f03fbeb53f6b38d2057ccddaab421961c7f
diff --git a/jjb/voltha-scale.yaml b/jjb/voltha-scale.yaml
index 04e01f9..ee98906 100644
--- a/jjb/voltha-scale.yaml
+++ b/jjb/voltha-scale.yaml
@@ -97,9 +97,9 @@
           atomixReplicas: 3
           extraHelmFlags: '--set defaults.rw_core.timeout=30s '
           withPcap: true
-          ofAgentImg: 'matteoscandolo/voltha-ofagent-go:flow-chunk'
           onosImg: 'matteoscandolo/voltha-onos:dhcp'
           logLevel: INFO
+          onosChart: /home/cord/onos-classic-charts/onos-helm-charts/onos-classic
 
       # jobs for DT with 512 ONUs with a 8 openonu-adapters and clustered ONOS.
       - 'voltha-scale-measurements':