Fix url for test failures

I assume the directory layout changed after the last gradle upgrade

R=jsjeon@google.com

Bug:
Change-Id: Ife372439165bf5e5dd59430942ea02463c3518b5
diff --git a/tools/test.py b/tools/test.py
index 53a7b1e..ba459e7 100755
--- a/tools/test.py
+++ b/tools/test.py
@@ -66,7 +66,7 @@
   u_dir = uuid.uuid4()
   destination = 'gs://%s/%s' % (BUCKET, u_dir)
   utils.upload_html_to_cloud_storage(upload_dir, destination)
-  url = 'http://storage.googleapis.com/%s/%s/index.html' % (BUCKET, u_dir)
+  url = 'http://storage.googleapis.com/%s/%s/test/index.html' % (BUCKET, u_dir)
   print 'Test results available at: %s' % url
 
 def Main():