Add notice of requesting source code in uprobestats

Flag: EXEMPT license change for b/418865751
Bug: 418865751
Test: presubmits
Test: lunch husky-trunk_staging-eng && m, an extra line is added at the top of NOTICE.html file in NOTICE.html.gz
Change-Id: I1f48d003a732e3a15f8411337e7a599739ef77b5
diff --git a/apex/Android.bp b/apex/Android.bp
index d827ebe..48dafdb 100644
--- a/apex/Android.bp
+++ b/apex/Android.bp
@@ -72,4 +72,8 @@
     key: "com.android.uprobestats.key",
     certificate: ":com.android.uprobestats.certificate",
     defaults: ["b-launched-apex-module"],
+    licenses: [
+        "Android-Apache-2.0",
+        "opensourcerequest",
+    ],
 }