Builds the CloudFormation Parameters for our stack.

        Args:
            stack (:class:`stacker.stack.Stack`): A stacker stack
            provider_stack (dict): An optional Stacker provider object

        Returns:
            dict: The parameters for the given stack

def build_parameters(self, stack, provider_stack=None):
        """Builds the CloudFormation Parameters for our stack.

        Args:
            stack (:class:`stacker.stack.Stack`): A stacker stack
            provider_stack (dict): An optional Stacker provider object

        Returns:
            dict: The parameters for the given stack

        """
        resolved = _resolve_parameters(stack.parameter_values, stack.blueprint)
        required_parameters = list(stack.required_parameter_definitions)
        all_parameters = list(stack.all_parameter_definitions)
        parameters = _handle_missing_parameters(resolved, all_parameters,
                                                required_parameters,
                                                provider_stack)

        param_list = []

        for key, value in parameters:
            param_dict = {"ParameterKey": key}
            if value is UsePreviousParameterValue:
                param_dict["UsePreviousValue"] = True
            else:
                param_dict["ParameterValue"] = str(value)

            param_list.append(param_dict)

        return param_list