Failed to create "AWSOriginRequestPolicy" resource. Resource handler returned message: "Invalid request provided: AWS::CloudFront::OriginRequestPolicy: Another origin request policy with the same name already exists within the aws account.

If you change the `region` of a `@saus/cloudformation` stack, it will try creating a request policy that already exists. This is because the deploy target's cache key is tied to the `region`, but the request policy is global. To fix this, we should give request policies (and other global CloudFormation resources) their own cache key.