[test/recipes] RFC6979 deterministic ECDSA KATs in evptest format

Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Paul Dale <pauli@openssl.org>
Reviewed-by: Hugo Landau <hlandau@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/18809)

test/recipes/30-test_evp.t

@@ -117,6 +117,7 @@ my @defltfiles = qw(
                      evppbe_pkcs12.txt
                      evppkey_kdf_scrypt.txt
                      evppkey_kdf_tls1_prf.txt
+                     evppkey_rfc6979.txt
                      evppkey_rsa.txt
                     );
 push @defltfiles, qw(evppkey_brainpool.txt) unless $no_ec;