[ONOS-2374]Add getter method in IpTunnelEndPoint

Change-Id: Ieef1c27dad859fcdef93c9fc28f271c5043c8641
diff --git a/incubator/api/src/main/java/org/onosproject/incubator/net/tunnel/IpTunnelEndPoint.java b/incubator/api/src/main/java/org/onosproject/incubator/net/tunnel/IpTunnelEndPoint.java
index 7c5247a..ad41adf 100644
--- a/incubator/api/src/main/java/org/onosproject/incubator/net/tunnel/IpTunnelEndPoint.java
+++ b/incubator/api/src/main/java/org/onosproject/incubator/net/tunnel/IpTunnelEndPoint.java
@@ -48,6 +48,14 @@
         return new IpTunnelEndPoint(ip);
     }
 
+    /**
+     * Returns IP address.
+     * @return IP address
+     */
+    public IpAddress ip() {
+        return ip;
+    }
+
     @Override
     public int hashCode() {
         return Objects.hash(ip);