change to using master tag for some containers

Change-Id: I48c34f2a4c54673fca11a1e09191125b6e2c6248
diff --git a/xos-services/volt/values.yaml b/xos-services/volt/values.yaml
index 2f1edb4..c8824e4 100644
--- a/xos-services/volt/values.yaml
+++ b/xos-services/volt/values.yaml
@@ -24,7 +24,7 @@
 
 imagePullPolicy: 'Always'
 
-volt_synchronizerImage: "xosproject/volt-synchronizer:{{ .Chart.Version }}"
+volt_synchronizerImage: "xosproject/volt-synchronizer:master"
 
 xosAdminUser: "admin@opencord.org"
 xosAdminPassword: "letmein"