Update the various SSL group getting and setting functions

Update the various SSL group getting and setting functions

A number of these functions returned a NID or an array of NIDs for the
groups. Now that groups can come from the providers we do not necessarily
know the NID. Therefore we need to handle this in a clean way.

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