Add license type: APL+BSD+BSL+LLVM+MIT=NOTICE

Bug: 68860345
Bug: 69058154
Bug: 151953481

Test: no code changes

Exempt-From-Owner-Approval: janitorial work

Change-Id: Ibec476018bb3d55d1dc51e0f304beba4a896fa52
diff --git a/METADATA b/METADATA
index 495af06..70fbe9e 100644
--- a/METADATA
+++ b/METADATA
@@ -10,6 +10,7 @@
     value: "https://github.com/iovisor/bcc.git"
   }
   version: "v0.8.0"
+  license_type: NOTICE
   last_upgrade_date {
     year: 2019
     month: 2