illegalArgument exception for priority

Change-Id: I9bce0b677b937ee691ac24c13c88a632cfb2339e
diff --git a/core/net/src/main/java/org/onlab/onos/net/intent/impl/PathIntentInstaller.java b/core/net/src/main/java/org/onlab/onos/net/intent/impl/PathIntentInstaller.java
index 6aa9f66..84e8c79 100644
--- a/core/net/src/main/java/org/onlab/onos/net/intent/impl/PathIntentInstaller.java
+++ b/core/net/src/main/java/org/onlab/onos/net/intent/impl/PathIntentInstaller.java
@@ -1,5 +1,7 @@
 package org.onlab.onos.net.intent.impl;
 
+import java.util.Iterator;
+
 import org.apache.felix.scr.annotations.Activate;
 import org.apache.felix.scr.annotations.Component;
 import org.apache.felix.scr.annotations.Deactivate;
@@ -19,8 +21,6 @@
 import org.onlab.onos.net.intent.IntentInstaller;
 import org.onlab.onos.net.intent.PathIntent;
 
-import java.util.Iterator;
-
 /**
  * Installer for {@link PathIntent path connectivity intents}.
  */
@@ -60,7 +60,7 @@
 
             FlowRule rule = new DefaultFlowRule(link.src().deviceId(),
                                                 builder.build(), treat.build(),
-                                                0, appId, 30);
+                                                10, appId, 30);
             flowRuleService.applyFlowRules(rule);
 
             prev = link.dst();