Added Timeout and UserAgent headers to asynchronous calls

Author: gnongsie

cybersource-rest-client-netstandard/cybersource-rest-client-netstandard/generator/cybersource-csharp-template/ApiClient.mustache

@@ -609,14 +609,19 @@ namespace {{packageName}}.Client
                 }
             }
 
-                if (logUtility.IsMaskingEnabled(logger))
-                {
-                    logger.Debug($"HTTP Request Headers :\n{logUtility.MaskSensitiveData(headerPrintOutput.ToString())}");
-                }
-                else
-                {
-                    logger.Debug($"HTTP Request Headers :\n{headerPrintOutput.ToString()}");
-                }
+            // set timeout
+            RestClient.Timeout = Configuration.Timeout;
+            // set user agent
+            RestClient.UserAgent = Configuration.UserAgent;
+
+            if (logUtility.IsMaskingEnabled(logger))
+            {
+                logger.Debug($"HTTP Request Headers :\n{logUtility.MaskSensitiveData(headerPrintOutput.ToString())}");
+            }
+            else
+            {
+                logger.Debug($"HTTP Request Headers :\n{headerPrintOutput.ToString()}");
+            }
 
             InterceptRequest(request);
             var response = await RestClient.Execute{{^netStandard}}TaskAsync{{/netStandard}}(request);