message: fix: Make sound switch discovery only for volume
diff: @@ -833,9 +833,15 @@ Gateway.prototype.discoverValue = function (node, valueId) {
  }
  break
  case 'sound_switch':
  + // https://github.com/OpenZWave/open-zwave/blob/master/config/Localization.xml#L1575
  + if (valueId.index === 2) { // volume control
  cfg = copy(hassCfg.sound_switch)
  cfg.discovery_payload.speed_state_topic = this.mqtt.getTopic(topic)
  cfg.discovery_payload.speed_command_topic = cfg.discovery_payload.speed_state_topic + '/set'
  + } else {
  + return
  + }
  +
  break
  case 'sensor_binary':
  // try to guess the type
  