[ONOS-7667] Code clean-up in compliance with Java8

Change-Id: Ieb17110357d8fa13705ebe9c86559b0863e77751
diff --git a/protocols/ovsdb/api/src/main/java/org/onosproject/ovsdb/controller/OvsdbQos.java b/protocols/ovsdb/api/src/main/java/org/onosproject/ovsdb/controller/OvsdbQos.java
index e44076c..5f1d4c9 100644
--- a/protocols/ovsdb/api/src/main/java/org/onosproject/ovsdb/controller/OvsdbQos.java
+++ b/protocols/ovsdb/api/src/main/java/org/onosproject/ovsdb/controller/OvsdbQos.java
@@ -181,7 +181,7 @@
             }
 
             if (qosDesc.queues().isPresent()) {
-                Map<Long, String> map = new HashMap();
+                Map<Long, String> map = new HashMap<>();
                 qosDesc.queues().get().forEach((k, v) -> map.put(k, v.queueId().name()));
                 queues = Optional.ofNullable(map);
             }