Replace javafx Pair with commons Pair

Change-Id: I7cd8674f3460f29b4472d21b8cb0665b99694a55
diff --git a/apps/vpls/src/main/java/org/onosproject/vpls/IntentInstaller.java b/apps/vpls/src/main/java/org/onosproject/vpls/IntentInstaller.java
index 080d8ff..c080f2d 100644
--- a/apps/vpls/src/main/java/org/onosproject/vpls/IntentInstaller.java
+++ b/apps/vpls/src/main/java/org/onosproject/vpls/IntentInstaller.java
@@ -16,7 +16,8 @@
 package org.onosproject.vpls;
 
 import com.google.common.collect.SetMultimap;
-import javafx.util.Pair;
+
+import org.apache.commons.lang3.tuple.Pair;
 import org.onlab.packet.MacAddress;
 import org.onlab.packet.VlanId;
 import org.onosproject.core.ApplicationId;