Get the template and parameters of the stack currently in AWS

        Returns [ template, parameters ]

def get_stack_info(self, stack):
        """ Get the template and parameters of the stack currently in AWS

        Returns [ template, parameters ]
        """
        stack_name = stack['StackId']

        try:
            template = self.cloudformation.get_template(
                StackName=stack_name)['TemplateBody']
        except botocore.exceptions.ClientError as e:
            if "does not exist" not in str(e):
                raise
            raise exceptions.StackDoesNotExist(stack_name)

        parameters = self.params_as_dict(stack.get('Parameters', []))

        return [json.dumps(template), parameters]