Deployment is not idempotent when the deployDevice parameter is enabled

[hocinehacherouf]

Expected Behavior

When the deployDevice parameter is set to true, the deployment of iotedge-lorawan-starterkit must be idempotent. Each deployment (with the deployDevice parameter equal to true) should:

• Create the device if it doesn't exist
• Update the device if its configuration is not up to date
• Ignore the lora device if it exists and its configuration it up to date

Current Behavior

With the deployDevice parameter set to true

• The first deployment from scratch was successful.
• The second and subsequent deployments (with the same settings) fails at the createIothubDevices step.

https://github.com/Azure/iotedge-lorawan-starterkit/blob/267d00cb8861dec87c504f06b3874330322f6011/TemplateBicep/devices.bicep#L31-L33

The output error message:

{
    "status": "failed",
    "error": {
        "code": "DeploymentScriptError",
        "message": "The provided script failed without returning any errors. Please refer to https://aka.ms/DeploymentScriptsTroubleshoot for more deployment script information."
    }
}

Steps to Reproduce

1. Go to Quick Start guide and press the 'Deploy to Azure' button.
2. In the 'Custom Deployment' page that opens
   • Fill out all required fields
   • Choose 'true' in the 'Deploy Device' dropdown.
3. Review + Create the deployment.
4. Wait until the end of the deployment
5. Create a new deployment with the same parameters

[Mandur]

Good point, we will provide a fix