Also set the line wrap limit to 72 + indent from 70 columns total. The
latter was limiting the CL description to 68 columns total before
wrapping kicked in.

BUG=none

Change-Id: I93c984c7b121d4bb042d0dc81a662352f77df4d1
Reviewed-on: https://chromium-review.googlesource.com/420243Reviewed-by: Dirk Pranke <dpranke@chromium.org>
Commit-Queue: Dirk Pranke <dpranke@chromium.org>