With this, modified files from submodules won't be reported,
but new ones will and this makes things much faster than not
having diff.ignoreSubmodules set at all.
Bug: 1470194
Change-Id: I041b6fb3151c0b06cff3cc77d6735ad2ebe27f21
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/4793910
Reviewed-by: Josip Sokcevic <sokcevic@chromium.org>
Commit-Queue: Joanna Wang <jojwang@chromium.org>
Commit-Queue: Josip Sokcevic <sokcevic@chromium.org>
Auto-Submit: Joanna Wang <jojwang@chromium.org>