Null resource resource

null_resource.tf.json

{
  "resource": {
    "null_resource": {
      "ssh_key": {
        "triggers": {
          "thumbprint": "${file(\"./ssl/ssh_thumbprint\")}"
        },
        "provisioner": [{
          "local-exec": {
            "command": "bash ./ssl/cert.sh ${azure_hosted_service.terraform.name}"
          }
        }]
      }
    }
  }
}