Change Copy task LogDiagnostics Warning so it is suppressible

src/Tasks/Copy.cs

@@ -211,11 +211,11 @@ internal static void RefreshInternalEnvironmentValues()
         /// If MSBUILDALWAYSRETRY is set, also log useful diagnostic information -- as 
         /// a warning, so it's easily visible. 
         /// </summary>
-        private void LogDiagnostic(string message, params object[] messageArgs)
+        private void LogAlwaysRetryDiagnosticFromResources(string messageResourceName, params object[] messageArgs)
         {
             if (s_alwaysRetryCopy)
             {
-                Log.LogWarning(message, messageArgs);
+                Log.LogWarningWithCodeFromResources(messageResourceName, messageArgs);
             }
         }
 
@@ -823,7 +823,7 @@ private bool DoCopyWithRetries(FileState sourceFileState, FileState destinationF
                         case IOException: // Not clear why we can get one and not the other
                             int code = Marshal.GetHRForException(e);
 
-                            LogDiagnostic("Got {0} copying {1} to {2} and HR is {3}", e.ToString(), sourceFileState.Name, destinationFileState.Name, code);
+                            LogAlwaysRetryDiagnosticFromResources("Copy.IOException", e.ToString(), sourceFileState.Name, destinationFileState.Name, code);
                             if (code == NativeMethods.ERROR_ACCESS_DENIED)
                             {
                                 // ERROR_ACCESS_DENIED can either mean there's an ACL preventing us, or the file has the readonly bit set.
@@ -839,7 +839,7 @@ private bool DoCopyWithRetries(FileState sourceFileState, FileState destinationF
                                 }
                                 else
                                 {
-                                    LogDiagnostic("Retrying on ERROR_ACCESS_DENIED because MSBUILDALWAYSRETRY = 1");
+                                    LogAlwaysRetryDiagnosticFromResources("Copy.RetryingOnAccessDenied");
                                 }
                             }
                             else if (code == NativeMethods.ERROR_INVALID_FILENAME)

src/Tasks/Resources/Strings.resx

@@ -2781,6 +2781,14 @@
     <value>MSB3893: Could not use a link to copy "{0}" to "{1}".</value>
     <comment>{StrBegin="MSB3893: "} LOCALIZATION: {0} and {1} are paths.</comment>
   </data>
+  <data name="Copy.IOException">
+    <value>MSB3894: "Got {0} copying {1} to {2} and HR is {3}"</value>
+    <comment>{StrBegin="MSB3894: "} LOCALIZATION: {0} is exception.ToString(), {1} and {2} are paths, {3} is a number")</comment>
+  </data>
+  <data name="Copy.RetryingOnAccessDenied">
+    <value>"MSB3895: Retrying on ERROR_ACCESS_DENIED because environment variable MSBUILDALWAYSRETRY = 1"</value>
+    <comment>{StrBegin="MSB3895: "} LOCALIZATION: Do NOT translate MSBUILDALWAYSRETRY")</comment>
+  </data>
 
   <!--
         MSB3901 - MSB3910   Task: Telemetry