fix in the point to point intent to take into account existing treatments

Change-Id: I9e2fdde93a435a383bbab5dc1bb890e1f0d88433
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 0e8abca..c4582c4 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
@@ -93,7 +93,7 @@
         while (links.hasNext()) {
             builder.matchInport(prev.port());
             Link link = links.next();
-            TrafficTreatment treatment = builder()
+            TrafficTreatment treatment = builder(intent.treatment())
                     .setOutput(link.src().port()).build();
 
             FlowRule rule = new DefaultFlowRule(link.src().deviceId(),