Add license type: Apache2 is NOTICE license am: a2c6b6bfbe

Change-Id: Ib2306b1b0610ee69bb2c4802cfc7f9262c583100
diff --git a/METADATA b/METADATA
index 5d8beb8..8f09930 100644
--- a/METADATA
+++ b/METADATA
@@ -10,6 +10,7 @@
     value: "https://github.com/cbeust/jcommander.git"
   }
   version: "1.71"
+  license_type: NOTICE
   last_upgrade_date {
     year: 2020
     month: 4