Add METADATA to piex: Apache2=NOTICE am: aebc3d7078

Change-Id: Ie22d72f0686b2d89ea1c1935477c8215d4ccdfbe
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
+}