Not Finding HS103
### Expected Behavior
Trying to connect my 2x HS103 plugs.

### Current Behavior
Using both the Discovery mode and the manual IP address, I am unable to connect to my outlets.
Saw something about a fix by adding all the switch models (but this did not work for me).

### Steps to Reproduce (for bugs)
Just started my own Homebridge from a Raspberry Pi.  
Everything was downloaded and installed, so it should be the latest versions.  
My router was both a 2.4 GHz and 5 GHz options, but both the Pi and the Kasa/TPLink products are running on the 2.4 GHz version.


### Versions
- **Node**:       v14.17.1
- **Homebridge**: 1.3.4
- **OS**:         Raspberry Pi

- **HS103 Hardware Version**: 2.1
- **HS103 Firmware Version**: 1.1.3 

### Configuration
-->
```json
{
    "name": "TplinkSmarthome",
    "addCustomCharacteristics": true,
    "switchModels": [
        "HS103",
        "HS200",
        "HS210",
        "HS220",
        "HS105"
    ],
    "broadcast": "255.255.255.192",
    "deviceTypes": [
        "plug",
        "bulb"
    ],
    "devices": [
        {
            "host": "192.168.1.2"
        },
        {
            "host": "192.168.1.20"
        }
    ],
    "platform": "TplinkSmarthome"
}
```

### Homebridge Log / Command Output
There doesn't ever seem to be any output from this plugin. 
From trying to debug the issue:
```
homebridge@raspberrypi:/var/lib/homebridge $ tplink-smarthome-api search --broadcast 255.255.255.192
Searching...
startDiscovery({
  discoveryInterval: 2000,
  discoveryTimeout: 10000,
  breakoutChildren: true,
  broadcast: '255.255.255.192'
})
homebridge@raspberrypi:/var/lib/homebridge $ tplink-smarthome-api search

Searching...
startDiscovery({
  discoveryInterval: 2000,
  discoveryTimeout: 10000,
  breakoutChildren: true,
  broadcast: '255.255.255.255'
})
```
