[ONOS-4694] YANG management system outline and YMSM/YDT interfaces

Change-Id: I050ed98ba18edc2c2cea2abafeee6d8c9061b579
diff --git a/apps/yms/api/BUCK b/apps/yms/api/BUCK
new file mode 100644
index 0000000..013d7cc
--- /dev/null
+++ b/apps/yms/api/BUCK
@@ -0,0 +1,7 @@
+COMPILE_DEPS = [
+  '//lib:CORE_DEPS',
+]
+
+osgi_jar_with_tests(
+  deps = COMPILE_DEPS,
+)