Add license type: Apache2+BSD are NOTICE licenses am: 1608439fc1

Change-Id: I8f80f1fbdb818369b6d0936a60edf0efc09137d5
diff --git a/METADATA b/METADATA
index b41e13f..dddab8c 100644
--- a/METADATA
+++ b/METADATA
@@ -10,6 +10,7 @@
     value: "https://github.com/python-hyper/uritemplate"
   }
   version: "3.0.1"
+  license_type: NOTICE
   last_upgrade_date {
     year: 2019
     month: 12