Status does not Updates when ewelink-plugin is configured multiple times
### What issue do you have? Please be as thorough and explicit as possible.

We configured the EWELINK Plugin twice:

```
{
            "name": "eWeLink Garage HOME",
            "countryCode": "39",
            "username": "xxxx",
            "password": "yyyy",
            "mode": "auto",
            "multiDevices": [
                {
                    "deviceId": "1000e6088e",
                    "label": "Garage EWLink",
                    "hideChannels": "3,4,0",
                    "ipAddress": "192.168.1.118"
                }
            ],
            "ignoredDevices": [
                "1000b72555"
            ],
            "singleDevices": [
                {
                    "deviceId": "10006ca5cc",
                    "label": "Lüfter HOME OG",
                    "ipAddress": "192.168.178.122"
                }
            ],
            "_bridge": {
                "username": "0E:F2:41:B5:A5:D8",
                "port": 59093
            },
            "platform": "eWeLink"
        },
        {
            "name": "eWeLink",
            "countryCode": "39",
            "username": "xxxx",
            "password": "yyyy",
            "mode": "auto",
            "singleDevices": [
                {
                    "deviceId": "1000b72534",
                    "label": "Licht Matthias",
                    "ipAddress": "192.168.178.134"
                },
                {
                    "deviceId": "10006ca5cb",
                    "label": "Lüfter HOME OG",
                    "ipAddress": "192.168.178.122"
                }
            ],
            "multiDevices": [
                {
                    "deviceId": "1000e6088e",
                    "label": "Garage EWLink",
                    "hideChannels": "3,4,0",
                    "ipAddress": "192.168.1.118"
                }
            ],
            "_bridge": {
                "username": "0E:AD:A0:EF:12:54",
                "port": 37628
            },
            "platform": "eWeLink"
        }
```

I configured both as "sub-bridge" to have the possibility to add both bridges to a separate Home, because on iOS we can only share the entire home, but not give permissions to separate homes.

This works perfectly - but as the device 1000e6088e is twice in our homebridge-system the status is updated only in one of both devices.

### Example

 - Open the Garage Door on the Device `1000e6088e` from EWELINK
 - Normally if I turn the switch ON, then after X seconds it should go off because the EWELINK only sends an impulse to the garage door. This also works if we configure the Plugin only once.
 - If we configure the Plugin twice as in the provided config the Status of the Output (Switch) is updated only in one Bridge, but not in both bridges.


We've the most current versions of homebridge, and ewelink.