{Resources} Fix Azure#20407: Fix space being removed from Display Nam…

…e parameter

Fixes Azure#20407

src/Resources/ResourceManager/RestClients/ResourceManagerRestClientBase.cs

@@ -165,7 +165,9 @@ protected async Task<HttpResponseMessage> SendRequestAsync(
         {
             var contentString = content == null ? string.Empty : content.ToString();
             // minify JOSN payload to avoid payload too large error
-            contentString = Regex.Replace(contentString, @"\r\n?|\n|\t| ", String.Empty);
+            var obj = JsonConvert.DeserializeObject(contentString);
+            contentString = JsonConvert.SerializeObject(obj);
+
             using (var httpContent = new StringContent(content: contentString, encoding: Encoding.UTF8, mediaType: "application/json"))
             using (var request = new HttpRequestMessage(method: httpMethod, requestUri: requestUri) { Content = httpContent })
             {