HELPER_HOSTNAME_QUERY_MAP key and value needed for Linode

[dev-dull]

Reference the tfstate file for hosts that were created on the Linode platform. In that file

• Identify the the Terraform Provider name.
• Develop a JSON path that returns the hostnames contained in the tfstate file
• Update HELPER_HOSTNAME_QUERY_MAP in config.yaml
  • the query map is a list of Key:Value pairs
  • Use the provider name for the Key
  • Use the JSON path for the Value