make various test CA certs RFC 5280 compliant w.r.t. X509 extensions

Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/13719)

Generate new Ed488 certificates

Create a whole chain of Ed488 certificates so that we can use it at security
level 4 (192 bit). We had an 2048 bit RSA (112 bit, level 2) root sign the

Generate new Ed488 certificates

Create a whole chain of Ed488 certificates so that we can use it at security
level 4 (192 bit). We had an 2048 bit RSA (112 bit, level 2) root sign the
Ed488 certificate using SHA256 (128 bit, level 3).

Reviewed-by: Matt Caswell <matt@openssl.org>
GH: #10785

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