Ignore mastership SUSPENDED events in DeviceManager

Change-Id: Ib99fd75dfa0361c270ca11ce8fe1976369ad494d
diff --git a/core/net/src/main/java/org/onosproject/net/device/impl/DeviceManager.java b/core/net/src/main/java/org/onosproject/net/device/impl/DeviceManager.java
index 694e1fb..0748b0c 100644
--- a/core/net/src/main/java/org/onosproject/net/device/impl/DeviceManager.java
+++ b/core/net/src/main/java/org/onosproject/net/device/impl/DeviceManager.java
@@ -873,7 +873,7 @@
     }
 
     private void handleMastershipEvent(MastershipEvent event) {
-        if (event.type() == MastershipEvent.Type.BACKUPS_CHANGED) {
+        if (event.type() == MastershipEvent.Type.BACKUPS_CHANGED || event.type() == MastershipEvent.Type.SUSPENDED) {
             // Don't care if backup list changed.
             return;
         }