AWS Secrets Manager Redshift Serverless Integration

[jbingham17]

As of right now there does not appear to be any integration to allow Secrets Manager to connect to a Redshift Serverless Namespace.

The following code should be supported:

    Type: AWS::SecretsManager::SecretTargetAttachment
    Properties:
      SecretId:
        Ref: RedshiftLoginSecret
      TargetId:
        Ref: FWRedshiftServerlessNamespace
      TargetType: AWS::RedshiftServerless::Namespace

This fails since AWS::RedshiftServerless::Namespace is not a supported TargetType

[joshbean]

Closing this issue or pull request in advance of archiving this repo. For more information about the decision to archive this repo (and others in the 'awsdocs' org), see the announcement on the AWS News Blog.