Add license type: Apache2 is a NOTICE license am: 457c5afe56 am: 6c962bdd20 am: 3592e07d38 am: 83422cd42f am: ba6bc6398a

Change-Id: Ia0a94a3a187f8126dc168724a3f56874acf84ea9
diff --git a/METADATA b/METADATA
index 673bc9c..d633669 100644
--- a/METADATA
+++ b/METADATA
@@ -10,6 +10,7 @@
     value: "https://github.com/square/javapoet.git"
   }
   version: "javapoet-1.12.1"
+  license_type: NOTICE
   last_upgrade_date {
     year: 2020
     month: 2