Add lib directory to app.yaml for sheriff-o-matic.

The directory was added recently and needs to be here so that
the right thing is uploaded to appengine.

TBR since this breaks pushing to appengine.

TBR=leviw@chromium.org

Review URL: https://codereview.chromium.org/469633002

git-svn-id: svn://svn.chromium.org/blink/trunk@180134 bbb929c8-8fbe-4397-9dbb-9b2b20218538

third_party/WebKit/Tools/GardeningServer/app.yaml

@@ -16,6 +16,9 @@ handlers:
 - url: /images
   static_dir: images
 
+- url: /lib
+  static_dir: lib
+
 - url: /model
   static_dir: model