using subnet as lease/range selection criteria in DHCP Relay App, addressed review comments

Change-Id: Id2a81faa00592df4ede33f6679c2ba2dd8fb2293
diff --git a/apps/dhcprelay/pom.xml b/apps/dhcprelay/pom.xml
index fc24d33..eb27c3e 100644
--- a/apps/dhcprelay/pom.xml
+++ b/apps/dhcprelay/pom.xml
@@ -49,6 +49,11 @@
 
         <dependency>
             <groupId>org.onosproject</groupId>
+            <artifactId>onos-incubator-api</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.onosproject</groupId>
             <artifactId>onlab-osgi</artifactId>
             <version>${project.version}</version>
         </dependency>