Add placeholder default task to Rakefile.
Add placeholder default task to Rakefile.

tobyclemson/terraform-aws-base-networking,tobyclemson/terraform-aws-vpc-auto-peering,tobyclemson/terraform-aws-ecs-cluster,tobyclemson/terraform-aws-vpc-auto-peering,tobyclemson/terraform-aws-vpc-auto-peering,tobyclemson/terraform-aws-ecs-cluster,tobyclemson/terraform-aws-base-networking,infrablocks/terraform-aws-ecs-service,infrablocks/terraform-aws-ecs-service