120s for role timeout in ONOS

Change-Id: I3555eff4e740e4245716b118c5ec8116fecd09c5
diff --git a/voltha-infra/values.yaml b/voltha-infra/values.yaml
index 2c0a332..1cfa041 100644
--- a/voltha-infra/values.yaml
+++ b/voltha-infra/values.yaml
@@ -28,7 +28,7 @@
   image:
     pullPolicy: Always
     repository: voltha/voltha-onos
-    tag: 5.0.5
+    tag: 5.1.0
   apps:
     - org.onosproject.lldpprovider
     - org.onosproject.openflow-base
@@ -131,6 +131,10 @@
         {
           "purgeOnDisconnection": "false"
         }
+      "org.onosproject.net.device.impl.DeviceManager": >
+        {
+          "roleTimeoutSeconds": "120"
+        }
 
 bbsim-sadis-server:
   enabled: true