In the approach you show in the case of v3 of Service Fabric you use the follwing c'tor:
public DependencyTelemetryRequestHandler() { this.telemetryClient = new TelemetryClient(); }
This empty c'tor for TelemetryClient is obselete, and since this is the one used in your solution the whole approach is obselete. Can you please update the code samples to update for this change?
Thanks