We currently fetch tags, which consumes ~17k lines. This limit ensures that we
won't blow up the log files in exceptional circumstances [currently setting
around ~2MB], but still allows us to get all the logs.

Change-Id: Ib690aaa07e2bde8549d221b90511b6c4863c3358
Recipe-Nontrivial-Roll: chromiumos
Recipe-Nontrivial-Roll: skia
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/1867971
Commit-Queue: Erik Chen <erikchen@chromium.org>
Auto-Submit: Erik Chen <erikchen@chromium.org>
Reviewed-by: Andrii Shyshkalov <tandrii@google.com>