mongodb-cluster-on-aws-ecs

Changes:

• Add mongodb.key in .gitignore file.
• Update code to:
  • Set the threshold for CPU, memory, and Disk space utilization to 85%.
  • Create locals to define AWS VPC private subnets along with their length.
  • Select the correct AWS VPC private subnet ID even if there are fewer subnets than the number of AWS EC2 instances.
  • Select the correct private AWS Route 53 hosted zone if both public and private exist with the same name/domain.
  • Set correct AWS ECS cluster name under dimensions for AWS CloudWatch metric alarms.
  • Fix Terraform code with respect to the AWS Terraform provider v4.65.0.
  • Update backups AWS S3 bucket's lifecycle policy rules to set a rule for INTELLIGENT_TIERING.
  • Add code to wait for the first AWS EC2 instance to be running and complete status checks.
• Refactor the whole Terraform code.
• Update the README accordingly.
• Prepare Release for v1.1.0.