TEST: separate out NIST ECC tests from non-NIST

TEST: separate out NIST ECC tests from non-NIST

ECC keys with non-NIST group names aren't supported when running with
the FIPS provider.

Keys with such groups that are included in evp_test stanza files
aren't even possible to decode if provider side decoders are used,
since those depend on available EVP_KEYMGMT implementations and what
they support.

Those keys could only be decoded because the legacy decoders were
used.

To make these tests future proof, we separate out the stanzas having
keys with NIST approved group names into separate files, and adjust
the file lists in test/recipes/30-test_evp.t aaccordingly.

Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/12672)