Add preupload hook to encourage submission to AOSP

Where possible, development should happen in AOSP so add a hook to
remind developers of this if it looks like they're trying to do
something else.

Test: N/A
Change-Id: I211de2daad2b67a3008e40043bb2da941d13548b
1 file changed
tree: ee67a23175f9692ffd29f42fc292a575630ffa61
  1. PREUPLOAD.cfg