Fix analytics pipeline to match new external addressing approach

Change-Id: I5c534f7639e7e384a90c9f38b6b5a5ad890e3437
diff --git a/helm/analytics_pipeline/tweeviz.yml b/helm/analytics_pipeline/tweeviz.yml
index d8f7aef..e264031 100644
--- a/helm/analytics_pipeline/tweeviz.yml
+++ b/helm/analytics_pipeline/tweeviz.yml
@@ -14,6 +14,6 @@
             storage: hdfs
             hdfs:
               deployChart: false
-              externalAddress: ${_param:analytics_hdfs_address}
               path: /
-              externalPort: 8020
+              addresses:
+                namenode: ${_param:analytics_hdfs_address}