[CORD-3015] Upgrade ONOS version to 1.13 in helm-charts

Change-Id: Ida13ed52947a802610226ab5c4314f9335aa31cb
diff --git a/onos/values.yaml b/onos/values.yaml
index c46008f..360f4d6 100644
--- a/onos/values.yaml
+++ b/onos/values.yaml
@@ -22,7 +22,7 @@
 
 image:
   repository: onosproject/onos
-  tag: 1.12.0
+  tag: 1.13.0
   pullPolicy: IfNotPresent
 
 nameOverride: ""