Add METADATA to test_serving: Apache2+MIT=NOTICE am: 5b8bbb814c am: 3da55c2868 am: 587937122b am: 6e6e7f4f80

Change-Id: I4bf120f93a2383519ce5a55baf4005648b609bd6
diff --git a/METADATA b/METADATA
new file mode 100644
index 0000000..d97975c
--- /dev/null
+++ b/METADATA
@@ -0,0 +1,3 @@
+third_party {
+  license_type: NOTICE
+}