[ONOS-3585] Add the cli of setting external port name.

Change-Id: I71833063c8e3f27fff7d69499cd3d24fd5537274
diff --git a/apps/vtn/vtnmgr/pom.xml b/apps/vtn/vtnmgr/pom.xml
index 03e6670..4b360c2 100644
--- a/apps/vtn/vtnmgr/pom.xml
+++ b/apps/vtn/vtnmgr/pom.xml
@@ -49,5 +49,9 @@
             <artifactId>onos-app-vtn-rsc</artifactId>
             <version>${project.version}</version>
         </dependency>
+        <dependency>
+            <groupId>org.apache.karaf.shell</groupId>
+            <artifactId>org.apache.karaf.shell.console</artifactId>
+        </dependency>
     </dependencies>
 </project>