[VOL-3630] Passing KV_STORE_DATAPATH_PREFIX the container

Change-Id: I3185fd1cd5d00300568a958ba4bebbedc21b9ea6
diff --git a/voltha-adapter-openonu/templates/openonu-go-deploy.yaml b/voltha-adapter-openonu/templates/openonu-go-deploy.yaml
index 09c8375..196b88c 100644
--- a/voltha-adapter-openonu/templates/openonu-go-deploy.yaml
+++ b/voltha-adapter-openonu/templates/openonu-go-deploy.yaml
@@ -76,6 +76,8 @@
               valueFrom:
                 fieldRef:
                   fieldPath: metadata.labels['app.kubernetes.io/name']
+            - name: KV_STORE_DATAPATH_PREFIX
+              value: {{ .Values.defaults.kv_store_data_prefix }}
           args:
             - "/app/openonu"
             - "--banner=true"