Add priority to Intents

Change-Id: Ibe63356f5b15a6aa6ca7731dba3382c3317a95ec
diff --git a/core/api/src/main/java/org/onosproject/net/intent/MplsIntent.java b/core/api/src/main/java/org/onosproject/net/intent/MplsIntent.java
index 0c13e3f..d7f8535 100644
--- a/core/api/src/main/java/org/onosproject/net/intent/MplsIntent.java
+++ b/core/api/src/main/java/org/onosproject/net/intent/MplsIntent.java
@@ -74,7 +74,8 @@
                               Optional<MplsLabel> egressLabel,
                               List<Constraint> constraints) {
 
-        super(appId, Collections.emptyList(), selector, treatment, constraints);
+        super(appId, Collections.emptyList(), selector, treatment, constraints,
+                DEFAULT_INTENT_PRIORITY);
 
         checkNotNull(ingressPoint);
         checkNotNull(egressPoint);
@@ -144,6 +145,7 @@
         return MoreObjects.toStringHelper(getClass())
                 .add("id", id())
                 .add("appId", appId())
+                .add("priority", priority())
                 .add("selector", selector())
                 .add("treatment", treatment())
                 .add("ingressPoint", ingressPoint)