Fix conditional check when sourcing AWS credentials.
Fix conditional check when sourcing AWS credentials.

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