[WPT import] Add a flag to upload but not submit CL

We used to have only one flag, --auto-update, which controls both
uploading and landing the import CL. This makes testing new setup of the
bot (i.e. LUCI in this case) hard.

This change adds one more flag, --auto-upload, to exercise more steps
(namely uploading and rebaselining), which will be used on the
experimental LUCI builder.

Bug: 790503
Change-Id: I4ce07fc9ddf15a34c9cb25ba4723d250cad26977
Reviewed-on: https://chromium-review.googlesource.com/c/1277587
Commit-Queue: Robert Ma <robertma@chromium.org>
Reviewed-by: Quinten Yearsley <qyearsley@chromium.org>
Cr-Commit-Position: refs/heads/master@{#599197}
1 file changed