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

Change-Id: Id2a81faa00592df4ede33f6679c2ba2dd8fb2293
diff --git a/apps/dhcprelay/BUCK b/apps/dhcprelay/BUCK
index aad1a8d..6f28dea 100644
--- a/apps/dhcprelay/BUCK
+++ b/apps/dhcprelay/BUCK
@@ -1,5 +1,6 @@
 COMPILE_DEPS = [
     '//lib:CORE_DEPS',
+    '//incubator/api:onos-incubator-api',
 ]
 
 osgi_jar (