Resolve WARN when atcivating odtn-api alone

Change-Id: I495710a54b8337d3b804c602cd0321529b24683b
diff --git a/apps/odtn/api/BUILD b/apps/odtn/api/BUILD
index 4943162..98930ac 100755
--- a/apps/odtn/api/BUILD
+++ b/apps/odtn/api/BUILD
@@ -15,6 +15,7 @@
 )
 
 APPS = [
+    "org.onosproject.config",
     "org.onosproject.yang",
     "org.onosproject.models.tapi",
     "org.onosproject.models.openconfig",