Add METADATA to rappor: Apache2=NOTICE am: 2b68dfbdc6 am: 78b7807811 am: f1e3654bc4 am: 903fc76c13

Change-Id: I23895420cd9609be911b8e670c0926fa74fcbaa6
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
+}