Port the Router functionality from SDN-IP.

As part of this we added an onlab-thirdparty artifact which allows us to
bring in dependencies that aren't bundles.
diff --git a/apps/sdnip/pom.xml b/apps/sdnip/pom.xml
index c8db20d..390b429 100644
--- a/apps/sdnip/pom.xml
+++ b/apps/sdnip/pom.xml
@@ -36,6 +36,12 @@
       <groupId>com.google.guava</groupId>
       <artifactId>guava</artifactId>
     </dependency>
+
+    <dependency>
+      <groupId>org.onlab.onos</groupId>
+      <artifactId>onlab-thirdparty</artifactId>
+    </dependency>
+
   </dependencies>
 
 </project>