Disabling the deploy stage does not work

When you disable the deploy stage like this:

```yaml
- name: sample-codebuild-only
default_providers:
source:
provider: codecommit
properties:
account_id: 111111111111
build:
provider: codebuild
deploy:
provider: cloudformation
enabled: False
```

It fails with the error: `Wrong key 'enabled' in {'provider': 'cloudformation', 'enabled': False}`.
Even though it is supposed to work according to the default deploy provider schema. See: https://github.com/awslabs/aws-deployment-framework/blob/c54cbf30eeff21de944a204c26f00e1447d2449e/src/lambda_codebase/initial_commit/bootstrap_repository/adf-build/shared/schema_validation.py#L277-L284

The problem is that the individual providers that it matches against does not support the enabled property. See:
https://github.com/awslabs/aws-deployment-framework/blob/c54cbf30eeff21de944a204c26f00e1447d2449e/src/lambda_codebase/initial_commit/bootstrap_repository/adf-build/shared/schema_validation.py#L286

and:

https://github.com/awslabs/aws-deployment-framework/blob/c54cbf30eeff21de944a204c26f00e1447d2449e/src/lambda_codebase/initial_commit/bootstrap_repository/adf-build/shared/schema_validation.py#L166-L169