fix: Terraform interface updates (#9)

* Disable logging by default

* Create dummy main level module

* Readme to clarify submodules

Author: gabedos

README.md

@@ -1,15 +1,19 @@
-# Datadog Terraform module for AWS ECS Tasks
+# Datadog Terraform Modules for AWS ECS Tasks
 
 [![License](https://img.shields.io/badge/license-Apache--2.0-blue)](https://github.com/DataDog/terraform-aws-lambda-datadog/blob/main/LICENSE)
 
 Use this Terraform module to install Datadog monitoring for AWS Elastic Container Service tasks.
 
 This Terraform module wraps the [aws_ecs_task_definition](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/ecs_task_definition) resource and automatically configures your task definition for Datadog monitoring.
 
+**Warning: This root module is not intended for direct use.** This repository is a collection of Terraform submodules for different ECS Datadog task configurations.
+
 For more information on the ECS Fargate module, reference the [documentation](https://github.com/DataDog/terraform-ecs-datadog/blob/main/modules/ecs_fargate/README.md).
 
 ## Usage
 
+### ECS Fargate
+
 ```hcl
 module "datadog_ecs_fargate_task" {
   source = "../../modules/ecs_fargate"

main.tf

@@ -0,0 +1,14 @@
+terraform {
+  required_providers {
+    null = {
+      source  = "hashicorp/null"
+      version = ">= 3.0"
+    }
+  }
+}
+
+resource "null_resource" "fail" {
+  provisioner "local-exec" {
+    command = "echo 'This module is not meant to be used directly. Please use one of the submodules under /modules instead.' && exit 1"
+  }
+}

modules/ecs_fargate/variables.tf

@@ -156,7 +156,7 @@ variable "dd_apm" {
 variable "dd_log_collection" {
   description = "Configuration for Datadog Log Collection"
   type = object({
-    enabled = optional(bool, true)
+    enabled = optional(bool, false)
     fluentbit_config = optional(object({
       registry                         = optional(string, "public.ecr.aws/aws-observability/aws-for-fluent-bit")
       image_version                    = optional(string, "stable")