fix: meterType devices missing ccSpecific values

[varet80]

When a Command Class is type Meter. In some cases is not a sensor. This metric is a Delta in time, or reset parameter for the Sensor.
There Parameters miss the ccSpecific values, which sets the type of sensor. This change fixes this error

[coveralls]

Pull Request Test Coverage Report for Build 387567036

• 188 of 472 (39.83%) changed or added relevant lines in 7 files are covered.
• 29 unchanged lines in 2 files lost coverage.
• Overall coverage increased (+0.5%) to 28.833%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
app.js	0	7	0.0%
lib/ZwaveClient.js	0	30	0.0%
lib/Gateway.js	52	299	17.39%

Files with Coverage Reduction	New Missed Lines	%
lib/utils.js	1	85.19%
lib/Gateway.js	28	21.68%

Totals
Change from base Build 387238528:	0.5%
Covered Lines:	1827
Relevant Lines:	6463

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💛 - Coveralls

[varet80]

I am trying to fix hass discovery for multilevel sensors of temperature
The sensor has unit of measurement and this is a problem. I do not know how to do this in the node part. I spent a bit of time but...could not find it

the hass payload is:

{
  "value_template": "{{ value_json.value }}",
  "device_class": "temperature",
  "state_topic": "zwave2mqtt/Garage/sensorBackSide/49/0/Air_temperature",
  "json_attributes_topic": "zwave2mqtt/Garage/sensorBackSide/49/0/Air_temperature",
  "device": {
    "identifiers": [
      "zwavejs2mqtt_0xcddb486e_node35"
    ],
    "manufacturer": "Shenzhen Neo Electronics Co., Ltd.",
    "model": "PIR Motion Sensor with Temperature Sensor (PD03Z)",
    "name": "Garage-sensorBackSide",
    "sw_version": "3.80"
  },
  "name": "Garage-sensorBackSide_temperature_air",
  "unique_id": "zwavejs2mqtt_0xcddb486e_35-49-0-Air temperature"
}

The payload is:

{
  "id": "35-49-0-Air temperature",
  "nodeId": 35,
  "commandClass": 49,
  "commandClassName": "Multilevel Sensor",
  "endpoint": 0,
  "property": "Air temperature",
  "propertyName": "Air temperature",
  "type": "number",
  "readable": true,
  "writeable": false,
  "label": "Air temperature",
  "ccSpecific": {
    "sensorType": 1,
    "scale": 0
  },
  "genre": "user",
  "unit": "°C",
  "list": false,
  "value": 0,
  "lastUpdate": 1606596275869
}

I think i always knew this is it:

        if (valueId.unit) {
          // https://github.com/zwave-js/node-zwave-js/blob/master/packages/config/config/scales.json
          cfg.discovery_payload.unit_of_measurement = valueId.unit
        }

Patch:

        // Discovered valueId.unit also exists. therefore added both unit and units to be
        // checked, but only one used
        if (valueId.unit) {
          // https://github.com/zwave-js/node-zwave-js/blob/master/packages/config/config/scales.json
          cfg.discovery_payload.unit_of_measurement = valueId.unit
        } else if (valueId.units) {
          cfg.discovery_payload.unit_of_measurement = valueId.unit
        }
I added a change on code and on my other pull request https://github.com/zwave-js/zwavejs2mqtt/pull/36

[robertsLando]

LGTM