The signature algorithm specified in CertificateVerify must have been in
the CertificateRequest. Add check.
The cipher suite test cases, when client auth and RSA are built-in and
use the default client certificate and use the *-ECDSA-* cipher
suites, no longer work. The client certificate must be ECC when the
cipher suite has ECDSA. Don't run them for that build.
Server only uses curves that are supported by both the client and the server. If no common groups are found, the connection will fail in TLS 1.2 and below. In TLS 1.3, HRR may still be used to resolve the group mismatch.
