Log updated request url with -Debug.

Author: peombwa

src/Authentication/Authentication/ErrorConstants.cs

@@ -28,7 +28,7 @@ internal static class Message
             internal const string ExpiredUserProvidedToken = "The provided access token has expired. Set a valid access token to `-{0}` parameter and try again.";
             internal const string InvalidUrlParameter = "Parameter '{0}' has an invalid endpoint URL. Please use a valid URL with a network protocol i.e. [protocol]://[resource-name].";
             internal const string InvalidNationalCloud = "Parameter `{0}` has an invalid national cloud. Use Get-MgEnvironment to get a list of valid national clouds.";
-            internal const string InvalidEnvironment = "Unable to find environment with name '{0}'.";
+            internal const string InvalidEnvironment = "Unable to find environment with name '{0}'. Use Get-MgEnvironment to list available environments.";
             internal const string CannotAccessFile = "Could not {0} file at '{1}'. Please ensure you have access to this file and try again in a few minutes..";
             internal const string CannotModifyBuiltInEnvironment = "Cannot {0} built-in environment {1}.";
         }

src/Authentication/Authentication/Helpers/HttpMessageFormatter.cs

@@ -245,6 +245,8 @@ private static void SerializeRequestLine(StringBuilder message, HttpRequestMessa
         private static void SerializeStatusLine(StringBuilder message, HttpResponseMessage httpResponse)
         {
             Contract.Assert(message != null, "message cannot be null");
+            message.Append(httpResponse.RequestMessage?.Method + SP);
+            message.Append(httpResponse.RequestMessage?.RequestUri.AbsoluteUri + CRLF);
             message.Append($"HTTP/{(httpResponse.Version != null ? httpResponse.Version.ToString(2) : "1.1")}{SP}");
             message.Append((int) httpResponse.StatusCode + SP);
             message.Append(httpResponse.ReasonPhrase + CRLF);

tools/Custom/HttpMessageFormatter.cs

@@ -265,6 +265,8 @@ private static void SerializeRequestLine(StringBuilder message, HttpRequestMessa
         private static void SerializeStatusLine(StringBuilder message, HttpResponseMessage httpResponse)
         {
             Contract.Assert(message != null, "message cannot be null");
+            message.Append(httpResponse.RequestMessage?.Method + SP);
+            message.Append(httpResponse.RequestMessage?.RequestUri.AbsoluteUri + CRLF);
             message.Append($"HTTP/{(httpResponse.Version != null ? httpResponse.Version.ToString(2) : "1.1")}{SP}");
             message.Append((int)httpResponse.StatusCode + SP);
             message.Append(httpResponse.ReasonPhrase + CRLF);