Templates missing parameters

Hello, I attempted to use your spoke template to create a cloudformation stack with ansible, and got the following error.

`The error was: botocore.exceptions.ClientError: An error occurred (ValidationError) when calling the CreateStack operation: Parameters: [SubnetId, VpcId, ImageId, InstanceType] do not exist in the template`

The task I ran includes these parameters, so I don't if this is an issue with the cloudformation module, or your template.

```
- name: Create a cloudformation stack
amazon.aws.cloudformation:
stack_name: ansible-cloudformation
state: present
region: "{{ region }}"
aws_access_key: "{{ aws_access_key }}"
disable_rollback: true
template: "./files/spokevpc.json"
template_parameters:
KeyName: "{{ key_name }}"
InstanceType: "{{ instance_type }}"
ImageId: "{{ image_id }}"
VpcId: "{{ vpc_id }}"
SubnetId: "{{ vpc_subnet_id }}"
tags: Stack: ansible-cloudformation
register: cloudformation
```

Start by comparing the parameters in ./files/spokevpc.json with the template_parameters passed to the amazon.aws.cloudformation task. Check whether the reported rejection comes from the template or the Ansible module, then verify the corrected parameter set with the same stack-creation task.

Written by the indexing model from the issue text.