Moves login flood settings from variable to config.
function user_update_8007() {
update_variables_to_config('user.flood', array(
'user_failed_login_identifier_uid_only' => 'uid_only',
'user_failed_login_ip_limit' => 'ip_limit',
'user_failed_login_ip_window' => 'ip_window',
'user_failed_login_user_limit' => 'user_limit',
'user_failed_login_user_window' => 'user_window',
));
}