change to using master tag for some containers

Change-Id: I48c34f2a4c54673fca11a1e09191125b6e2c6248
diff --git a/xos-services/volt/Chart.yaml b/xos-services/volt/Chart.yaml
index e91e494..f432ea8 100644
--- a/xos-services/volt/Chart.yaml
+++ b/xos-services/volt/Chart.yaml
@@ -15,4 +15,4 @@
 
 name: volt
 description: A Helm chart for XOS's "olt-service" service
-version: 2.0.1
+version: 2.0.2-dev