Refactor buck external dependencies

Change-Id: Ia4b99493407eb7d4e893804cba6b944f758f085e
diff --git a/apps/mappingmanagement/mgr/BUCK b/apps/mappingmanagement/mgr/BUCK
index 019f25f..5be1e7d 100644
--- a/apps/mappingmanagement/mgr/BUCK
+++ b/apps/mappingmanagement/mgr/BUCK
@@ -1,5 +1,6 @@
 COMPILE_DEPS = [
     '//lib:CORE_DEPS',
+    '//lib:KRYO',
     '//apps/mappingmanagement/api:onos-apps-mappingmanagement-api',
     '//core/store/serializers:onos-core-serializers',
 ]