Maintain the max_len values in foo.options files which ClusterFuzz can process.
Also recompute the recommended client and server lengths as they've since
gotten much more extensive.
Change-Id: Ie87a80d8a4a0c41e215f0537c8ccf82b38c4de09
Reviewed-on: https://boringssl-review.googlesource.com/7509
Reviewed-by: Mike Aizatsky <aizatsky@chromium.org>
Reviewed-by: David Benjamin <davidben@google.com>
