DBI password hash list is too restrictive

In Lemonldap/NG/Portal/Lib/DBI.pm, we restrict hash scheme :

    if ( $hash =~ /^(md5|sha|sha1|encrypt)$/i ) {
        $self->logger->debug( "Using " . uc($hash) . " to hash password" );
        return uc($hash) . "($password)";
    }

It prevents to use for example sha2 or even a custom method that would be declared on database side.

As the hash is done by the database itself, I don't see why we need to restrict the list on our side.