Backport some fuzzing data files from master

Backport some fuzzing data files from master

This is a backport of the following commit from master:

commit 415e6ac80405e13b20b083315747e431274fbd33
Author: Tavis Ormandy <taviso@gmail.com>
Date:   Tue Sep 21 15:48:27 2021 -0700

    increase x509 code coverage metrics

    Reviewed-by: Matt Caswell <matt@openssl.org>
    Reviewed-by: Tomas Mraz <tomas@openssl.org>
    (Merged from https://github.com/openssl/openssl/pull/16651)

Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/18347)