Don't send supported groups if no-ec and we're doing DTLS
Don't send supported groups if no-ec and we're doing DTLS

The supported_groups extension only supported EC groups in DTLS.
Therefore we shouldn't send it in a no-ec build.

Reviewed-by: Shane Lontis <452ce16516ceed26291fe7de3f8b53540d83864e@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/11914)

openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl