Discard all keywords which aren't function-specific from the kwargs.

        :param kwargs:
        :return:

def _get_args(self, kwargs):
        '''
        Discard all keywords which aren't function-specific from the kwargs.

        :param kwargs:
        :return:
        '''
        _args = list()
        _kwargs = salt.utils.args.clean_kwargs(**kwargs)

        return _args, _kwargs