Adding Support to override the ClientRequestID guid format for test recording sessions.

sdk/core/Azure.Core.TestFramework/src/ProxyTransport.cs

@@ -135,8 +135,16 @@ public override Request CreateRequest()
             _recording.HasRequests = true;
             lock (_recording.Random)
             {
-                // Make sure ClientRequestId are the same across request and response
-                request.ClientRequestId = _recording.Random.NewGuid().ToString("N");
+                if (_recording.UseDefaultGuidFormatForClientRequestId)
+                {
+                    // User want the client format to use the default format
+                    request.ClientRequestId = _recording.Random.NewGuid().ToString();
+                }
+                else
+                {
+                    // Make sure ClientRequestId are the same across request and response
+                    request.ClientRequestId = _recording.Random.NewGuid().ToString("N");
+                }
             }
             return request;
         }

sdk/core/Azure.Core.TestFramework/src/RecordedTestBase.cs

@@ -149,6 +149,13 @@ public string ReplacementHost
         /// </summary>
         public bool CompareBodies { get; set; } = true;
 
+        /// <summary>
+        /// Determines if the ClientRequestId that is sent as part of a request while in Record mode
+        /// should use the default Guid format. The default Guid format contains hyphens.
+        /// The default value is <value>false</value>.
+        /// </summary>
+        public bool UseDefaultGuidFormatForClientRequestId { get; set; } = false;
+
         /// <summary>
         /// Request headers whose values can change between recording and playback without causing request matching
         /// to fail. The presence or absence of the header itself is still respected in matching.

sdk/core/Azure.Core.TestFramework/src/TestRecording.cs

@@ -199,6 +199,18 @@ public TestRandom Random
 
         public string RecordingId { get; private set; }
 
+        /// <summary>
+        /// Determines if the ClientRequestId that is sent as part of a request while in Record mode
+        /// should use the default Guid format. The default Guid format contains hyphens.
+        /// </summary>
+        public bool UseDefaultGuidFormatForClientRequestId
+        {
+            get
+            {
+               return _recordedTestBase.UseDefaultGuidFormatForClientRequestId;
+            }
+        }
+
         /// <summary>
         /// Gets the moment in time that this test is being run.  This is useful
         /// for any test recordings that capture the current time.