Characteristic Model/Brand not set Warning
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**Describe The Problem:**
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Since updating Homebridge to V1.3.1 I am getting a warning that the Characteristic for Make/Model arent set. After reviewing I actually found the problem. My Bridge is not a recognised model but is still found. So myq-accessory.ts::75 is finding there was a parent discovered, and setting gwProduct and gwBrand to empty strings as my model wasn't found in the table in myq-api.ts::553.

I'm in Australia and it looks like we have a slightly different Chamberlain MyQ bridge model:
SN: A0000 xxx xxx
Model: CIGBUAU

After adding a new entry for this model/adding checks in to make sure brand & product were set, everything works as expected.

**To Reproduce:**
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Connect MyQ to an Australian hub.

**Logs:**
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[2/28/2021, 7:27:07 AM] Homebridge v1.3.1 (Homebridge 95D3) is running on port 51715.
[2/28/2021, 7:27:08 AM] [homebridge-myq] This plugin generated a warning from the characteristic 'Model': [Model] characteristic must have a length of more than 1 character otherwise HomeKit will reject this accessory, ignoring new value. See https://git.io/JtMGR for more info.
[2/28/2021, 7:27:11 AM] [myQ] myQ API: Successfully connected to the myQ API.
[2/28/2021, 7:27:14 AM] [myQ] myQ API: Discovered device family garagedoor: Garage Door (serial number: CG081150D36B, gateway: GWA000001530).
[2/28/2021, 7:27:14 AM] [myQ] myQ API: Discovered device family gateway: MyQ Garage Hub (serial number: GWA000001530).
[2/28/2021, 7:27:14 AM] [homebridge-myq] This plugin generated a warning from the characteristic 'Manufacturer': characteristic value expected string and received undefined. See https://git.io/JtMGR for more info.
[2/28/2021, 7:27:14 AM] [homebridge-myq] This plugin generated a warning from the characteristic 'Model': characteristic value expected string and received undefined. See https://git.io/JtMGR for more info.
[2/28/2021, 7:27:14 AM] [homebridge-myq] This plugin generated a warning from the characteristic 'Model': [Model] characteristic must have a length of more than 1 character otherwise HomeKit will reject this accessory, ignoring new value. See https://git.io/JtMGR for more info.

```json
{
    "email": "Email@email.com",
    "password": "Password",
    "debug": false,
    "platform": "myQ"
}
```

**Screenshots:**
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**Environment:**

* **Homebridge Version:** <!-- homebridge -V -->  1.3.1
* **Node Version:** <!-- node -v -->  14.15.3
* **Homebridge-myQ Plugin Version**: 2.6.2
* **Apple Device and iOS / macOS / iPadOS / tvOS Version:**<!-- Type of Apple device you're using and associated OS version --> Latest
* **Operating System and OS Version:** <!-- Raspbian / Ubuntu / Debian / Windows / macOS / Docker --> Mac OS Latest

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