support bidirectional links

Change-Id: I6c5d092abf7629b28ea0b1928ee6cf63f99de962
diff --git a/core/net/src/main/java/org/onlab/onos/net/intent/impl/OpticalPathIntentInstaller.java b/core/net/src/main/java/org/onlab/onos/net/intent/impl/OpticalPathIntentInstaller.java
index 64ac3ea..5557b05 100644
--- a/core/net/src/main/java/org/onlab/onos/net/intent/impl/OpticalPathIntentInstaller.java
+++ b/core/net/src/main/java/org/onlab/onos/net/intent/impl/OpticalPathIntentInstaller.java
@@ -116,6 +116,7 @@
                     appId,
                     100,
                     true);
+
             rules.add(new FlowRuleBatchEntry(FlowRuleOperation.ADD, rule));
 
             prev = link.dst();