Change image tag to 'master' for development

Change-Id: Iced1eb4e0e1455f8be269075f71158f5ac6c471a
diff --git a/xos-services/onos-service/values.yaml b/xos-services/onos-service/values.yaml
index ecc7633..a713c38 100644
--- a/xos-services/onos-service/values.yaml
+++ b/xos-services/onos-service/values.yaml
@@ -24,7 +24,7 @@
 
 image:
   repository: xosproject/onos-synchronizer
-  tag: a2db56dd4760a3774b159105722afb6974cbe13f
+  tag: master
   pullPolicy: IfNotPresent
 
 resources: {}