Feature/tailscale access (#1)

* AWS_R53_ENABLED: Delete unused variable

* Add Tailscale Feature
- Removed R53 configuration
- Updated Ansible playbook to handle empty variables
- Updated Ansible playbook to use variables file
- Updated README to include updated requirements

---------

Co-authored-by: Damien A <sepales.pret0h@icloud.com>

terraform/ec2.tf

@@ -20,12 +20,6 @@ resource "aws_security_group" "netlab_sg" {
     protocol    = "tcp"
     cidr_blocks = [var.AWS_LOCAL_IP]
   }
-  ingress {
-    from_port   = 50080
-    to_port     = 50080
-    protocol    = "tcp"
-    cidr_blocks = [var.AWS_LOCAL_IP]
-  }
 }
 
 resource "aws_instance" "containerlab_host" {
@@ -51,9 +45,11 @@ resource "aws_instance" "containerlab_host" {
   provisioner "local-exec" {
     command = <<EOT
       sleep 20
-      ANSIBLE_HOST_KEY_CHECKING=False ansible-playbook -u admin -i ../ansible/inventory --private-key ${var.AWS_KEY_LOCATION} ../ansible/install_containerlab.yml \
-      ${var.GITHUB_REPO_URL != "" ? "--extra-vars repo_git_url=${var.GITHUB_REPO_URL}" : ""} \
-      ${var.LOCAL_DIR_PATH != "" ? "--extra-vars local_dir_path=${var.LOCAL_DIR_PATH}" : ""}
+      ANSIBLE_HOST_KEY_CHECKING=False ansible-playbook \
+      -u admin \
+      -i ../ansible/inventory \
+      --private-key ${var.AWS_KEY_LOCATION} \
+      ../ansible/install_containerlab.yml 
     EOT
   }
 }