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

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

terraform/terraform.tfvars.sample

@@ -1,6 +1,4 @@
 AWS_ACCESS_KEY   = "YOURACCESSKEY"
 AWS_SECRET_KEY   = "YOURACCESSTOKEN"
 AWS_KEY_NAME     = "AWS_key_name"
-AWS_KEY_LOCATION = "~/.ssh/aws_key.pem"
-AWS_R53_ENABLED  = "false"
-AWS_R53_ZONE_ID  = "R53_ZONE_ID"
+AWS_KEY_LOCATION = "~/.ssh/aws_key.pem"