This will hopefully fix the following errors:

    [FAIL] TrustUsingNewCallback : System.Net.WebException : nodename nor servname provided, or not known (dotnet.microsoft.com:443)
     ----> System.Net.Http.HttpRequestException : nodename nor servname provided, or not known (dotnet.microsoft.com:443)
     ----> System.Net.Sockets.SocketException : nodename nor servname provided, or not known
    	   at System.Net.HttpWebRequest.GetResponse()
    	   at System.Net.WebClient.GetWebResponse(WebRequest )
    	   at System.Net.WebClient.DownloadBits(WebRequest , Stream )
    	   at System.Net.WebClient.DownloadDataInternal(Uri , WebRequest& )
    	   at System.Net.WebClient.DownloadString(Uri )
    	   at System.Net.WebClient.DownloadString(String )
    	   at LinkSdk.CryptoTest.TrustUsingNewCallback()
    	   at System.Reflection.MethodInvoker.InterpretedInvoke(Object , Span`1 , BindingFlags )
    	--HttpRequestException
    	   at System.Net.Http.HttpConnectionPool.ConnectToTcpHostAsync(String , Int32 , HttpRequestMessage , Boolean , CancellationToken )
    	   at System.Net.Http.HttpConnectionPool.ConnectAsync(HttpRequestMessage , Boolean , CancellationToken )
    	   at System.Net.Http.HttpConnectionPool.CreateHttp11ConnectionAsync(HttpRequestMessage , Boolean , CancellationToken )
    	   at System.Net.Http.HttpConnectionPool.AddHttp11ConnectionAsync(QueueItem )
    	   at System.Threading.Tasks.TaskCompletionSourceWithCancellation`1[[System.Net.Http.HttpConnection, System.Net.Http, Version=7.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a]].WaitWithCancellation(CancellationToken )
    	   at System.Threading.Tasks.TaskCompletionSourceWithCancellation`1[[System.Net.Http.HttpConnection, System.Net.Http, Version=7.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a]].WaitWithCancellationAsync(Boolean , CancellationToken )
    	   at System.Net.Http.HttpConnectionPool.HttpConnectionWaiter`1.<WaitForConnectionAsync>d__5[[System.Net.Http.HttpConnection, System.Net.Http, Version=7.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a]].MoveNext()
    	   at System.Net.Http.HttpConnectionPool.SendWithVersionDetectionAndRetryAsync(HttpRequestMessage , Boolean , Boolean , CancellationToken )
    	   at System.Net.Http.RedirectHandler.SendAsync(HttpRequestMessage , Boolean , CancellationToken )
    	   at System.Net.Http.HttpMessageHandlerStage.Send(HttpRequestMessage , CancellationToken )
    	   at System.Net.Http.SocketsHttpHandler.Send(HttpRequestMessage , CancellationToken )
    	   at System.Net.Http.HttpMessageInvoker.Send(HttpRequestMessage , CancellationToken )
    	   at System.Net.Http.HttpClient.Send(HttpRequestMessage , HttpCompletionOption , CancellationToken )
    	   at System.Net.HttpWebRequest.SendRequest(Boolean )
    	   at System.Net.HttpWebRequest.GetResponse()
    	--SocketException
    	   at System.Net.Dns.GetHostEntryOrAddressesCore(String , Boolean , AddressFamily , Int64 )
    	   at System.Net.Dns.GetHostAddressesCore(String , AddressFamily , Int64 )
    	   at System.Net.Dns.GetHostAddresses(String , AddressFamily )
    	   at System.Net.Dns.GetHostAddresses(String )
    	   at System.Net.Sockets.Socket.Connect(String , Int32 )
    	   at System.Net.Sockets.Socket.Connect(EndPoint )
    	   at System.Net.HttpWebRequest.<>c__DisplayClass219_0.<<CreateHttpClient>b__1>d.MoveNext()
    	--- End of stack trace from previous location ---
    	   at System.Net.Http.HttpConnectionPool.ConnectToTcpHostAsync(String , Int32 , HttpRequestMessage , Boolean , CancellationToken )