Uses Azure App Insights to track site provisioning and applying a PnP template

COB_AppInsights_TrackSiteProvisioning.cs

XMLTemplateProvider provider = new XMLFileSystemTemplateProvider(TEMPLATE_FILE_PATH, string.Empty);
ProvisioningTemplate template = provider.GetTemplate(TEMPLATE_FILE);

stopwatch = System.Diagnostics.Stopwatch.StartNew();

try
{
    rootWeb.ApplyProvisioningTemplate(template);
    stopwatch.Stop();

    var applyTemplateMetrics = new Dictionary<string, double> { { "processingTime", stopwatch.Elapsed.TotalMilliseconds } };
    var applyTemplateProperties = new Dictionary<string, string> { { "siteCollectionUrl", NEW_SITE_URL }, { "templateID", template.Id } };

    // track success..
    telemetry.TrackEvent("TemplateApplied", applyTemplateProperties, applyTemplateMetrics);
}
catch (Exception e)
{
    stopwatch.Stop();

    // also send the exception message to App Insights in this case..
    var errorMetrics = new Dictionary<string, double> { { "processingTime", stopwatch.Elapsed.TotalMilliseconds } };
    var errorProperties = new Dictionary<string, string> { { "exception", e.Message }, { "siteCollectionUrl", NEW_SITE_URL }, { "templateID", template.Id } };

    // track failure..
    telemetry.TrackEvent("ErrorApplyingTemplate", errorProperties, errorMetrics);
}