AWSTemplateFormatVersion: '2010-09-09'
Parameters:
  TemplateNameParameter:
    # Default: "test.template_nested.yaml"
    Type: String
  QSS3BucketName:
    Type: String
    Default: "Foo"
Resources:
  NestedStack1:
    Type: AWS::CloudFormation::Stack
    Properties:
            TemplateURL: !Sub "https://${QSS3BucketName}.s3.amazonaws.com/badtemplateurl/${AWS::Region}/${TemplateNameParameter}"
  NestedStack2:
    Type: AWS::CloudFormation::Stack
    Properties:
      TemplateURL: !Sub 'https://${QSS3BucketName}.s3.amazonaws.com/badtemplateurl/templates/test.template_nested.yaml'