(defn get-environment-variables [elb-enviroment]
  (-> elb-enviroment
      (select-keys [:application-name :environment-name])
      describe-configuration-settings
      :configuration-settings
      (get 0)
      :option-settings
      option-settings->environment-variables
      parse-environment-variables
      #(if (contains? % "HOTEL_SUPPLY_SERVICE_URL") %
           (assoc % "HOTEL_SUPPLY_SERVICE_URL" default-hss-env))))