Use Rest Api to upload to the feed

Add pulling logic to make sure it is uploaded to the feed.

Add retry logic for the whole upload process

Remove the old upload script

build_projects/dotnet-cli-build/UploadToLinuxPackageRepository/RetryFailedException.cs

@@ -0,0 +1,23 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+
+namespace Microsoft.DotNet.Cli.Build.UploadToLinuxPackageRepository
+{
+    public class RetryFailedException : Exception
+    {
+        public RetryFailedException(string message) : base(message)
+        {
+        }
+
+        public RetryFailedException()
+        {
+        }
+
+        public RetryFailedException(string message, Exception innerException) : base(message, innerException)
+        {
+        }
+    }
+}