tree a47aeee36ccffde5f0bdc425372a3a598d22b322
parent 20559619622f7a0dfb95aba0202ab39351e65207
author Richard Barnette <jrbarnette@chromium.org> 1500327288 -0700
committer Richard Barnette <jrbarnette@google.com> 1500327667 +0000

Make the default `payload_filename` be None.

This is a speculative fix to address ongoing failures in the lab.
It appears that the standard provisioning flow is passing a
"payload_filename" parameter that's an empty string instead of None.
That's causing the AU EndToEnd test flow to trigger, causing failures.

TEST=None
BUG=chromium:744959

Change-Id: I142aa0c24b1a2305c51fae0a78762e0c92546792
Reviewed-on: https://chromium-review.googlesource.com/575429
Tested-by: Richard Barnette <jrbarnette@chromium.org>
Reviewed-by: Richard Barnette <jrbarnette@google.com>