TYPO3 9 EXT:form compatibility of validators

[mkrappitz]

OptIn and OutOut validators for EXT:form need a class property $supportedOptions to define the validators options, otherwise they are not working in TYPO3 9. This is what I added to both classes, now they are working:

    /**
     * @var array
     */
    protected $supportedOptions = [
        'groupId' => [0, 'The group id', 'integer'],
    ];