Refactor buck external dependencies

Change-Id: Ia4b99493407eb7d4e893804cba6b944f758f085e
diff --git a/apps/roadm/BUCK b/apps/roadm/BUCK
index 205fd1b..8a87283 100644
--- a/apps/roadm/BUCK
+++ b/apps/roadm/BUCK
@@ -1,5 +1,6 @@
 COMPILE_DEPS = [
     '//lib:CORE_DEPS',
+    '//lib:JACKSON',
     '//core/store/serializers:onos-core-serializers',
     '//apps/optical-model:onos-apps-optical-model',
 ]