Fix dhcprelay dependency

Change-Id: I80b83c82fa84eb4235c1de392e1b542a0724ea75
diff --git a/apps/dhcprelay/BUILD b/apps/dhcprelay/BUILD
index c444b1a..6f516da 100644
--- a/apps/dhcprelay/BUILD
+++ b/apps/dhcprelay/BUILD
@@ -8,7 +8,10 @@
     category = "Utility",
     description = "DHCP Relay Agent Application.",
     included_bundles = BUNDLES,
-    required_apps = ["org.onosproject.route-service"],
+    required_apps = [
+        "org.onosproject.route-service",
+        "org.onosproject.fpm",
+    ],
     title = "DHCP Relay Agent",
     url = "http://onosproject.org",
 )