Initial commit: Terraform plan for Singapore production ACK cluster

- Creates VPC with 3 vswitches across availability zones
- Creates security group with ports for all production services
- Creates ACK managed Kubernetes cluster with 10 worker nodes
- Auto-scaling up to 20 worker nodes
- Creates SLB for load balancing
- Includes deploy.sh script to apply cluster-all.yaml resources

.gitignore

@@ -0,0 +1,15 @@
+# Terraform
+*.tfstate
+*.tfstate.*
+.terraform/
+.terraform.lock.hcl
+
+# IDE
+.idea/
+.vscode/
+*.swp
+*.swo
+
+# OS
+.DS_Store
+Thumbs.db