Azure Kubernetes Services - Start & Stop Your AKS Cluster on Schedule using Azure Automation

First of all, thank you for this tutorial!

Just a couple remarks that I've noticed:

1) I believe it should be [7] instead of [8]:

        $aksClusterName = $($aksClusterResourceId -split '/')[7]

Since aksclusterResourceId is something like this:

subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.ContainerService/managedClusters/{resourceName}

2) Maybe it makes sense to refactor the second try-catch and move this code into 'else' sections:

        #Performning the operation
        $postResponse = Invoke-WebRequest -UseBasicParsing -Method Post -Headers $headers_Auth -Uri $postRestUri
        $StatusCode = $postResponse.StatusCode

Otherwise, `Invoke-WebRequest` will be called when it should not (for example, stop operation for the stopped cluster or start operation for the running cluster).