client: include minimum_size in log message

This is useful when debugging p2p applications such as update_engine
as the log message appears in /var/log/messages.

BUG=None
TEST=Unit tests pass + manually verify output

Change-Id: I775e9afc04656793937f15ee916b844140242cac
Reviewed-on: https://gerrit.chromium.org/gerrit/64014
Commit-Queue: David Zeuthen <zeuthen@chromium.org>
Reviewed-by: David Zeuthen <zeuthen@chromium.org>
Tested-by: David Zeuthen <zeuthen@chromium.org>
1 file changed