code: def build_info_response
        entries = HireFire::Resource.dynos.map do |config|
          %({"name":"#{config[:name]}","quantity":#{config[:quantity].call || "null"}})
        end
  
        status                   = 200
        headers                  = Hash.new
        headers["Content-Type"]  = "application/json"
        headers["Cache-Control"] = "must-revalidate, private, max-age=0"
        body                     = "[" + entries.join(",") + "]"
  
        [status, headers, [body]]
      end
docs: Builds the response for the info path containing the configured
   queues and their sizes based on the HireFire::Resource configuration.
  
   @return [String] in application/json format.