Filter out more default telemetry properties

src/Telemetry/Telemetry.cs

@@ -11,6 +11,7 @@
 using Microsoft.Extensions.Configuration;
 using System.Globalization;
 using Microsoft.Data.SqlClient;
+using Microsoft.ApplicationInsights.Extensibility.Implementation;
 
 namespace Microsoft.Azure.WebJobs.Extensions.Sql.Telemetry
 {
@@ -72,10 +73,16 @@ private void InitializeTelemetry(string productVersion, IConfiguration config)
                 {
                     ConnectionString = $"InstrumentationKey={InstrumentationKey};"
                 };
-                telemetryConfig.TelemetryInitializers.Add(new TelemetryInitializer());
                 this._client = new TelemetryClient(telemetryConfig);
                 this._client.Context.Session.Id = CurrentSessionId;
                 this._client.Context.Device.OperatingSystem = RuntimeInformation.OSDescription;
+                // Filter out sensitive information that we don't need
+                //   RoleInstance - It can contain information such as the machine and domain name of the client
+                //   NodeName - It can contain information such as the machine and domain name of the client
+                //   Ip - We don't need any location info
+                this._client.Context.Cloud.RoleInstance = "-";
+                this._client.Context.GetInternalContext().NodeName = "-";
+                this._client.Context.Location.Ip = "0.0.0.0";
 
                 this._commonProperties = new TelemetryCommonProperties(productVersion, this._client, config).GetTelemetryCommonProperties();
                 this._commonMeasurements = new Dictionary<string, double>();