Move pub over to using the pub.dartlang.org API v2.

sdk/lib/_internal/pub/test/lish/utils.dart

Index: sdk/lib/_internal/pub/test/lish/utils.dart
diff --git a/sdk/lib/_internal/pub/test/lish/utils.dart b/sdk/lib/_internal/pub/test/lish/utils.dart
index ba921e2b07fbfc91b1eed0fbb95fa938af5a738e..6ee3f5e608c31fcb3578e04813987b361aaf65e1 100644
--- a/sdk/lib/_internal/pub/test/lish/utils.dart
+++ b/sdk/lib/_internal/pub/test/lish/utils.dart
@@ -14,7 +14,7 @@ import '../../lib/src/io.dart';
 import '../test_pub.dart';
 
 void handleUploadForm(ScheduledServer server, [Map body]) {
-  server.handle('GET', '/packages/versions/new.json', (request) {
+  server.handle('GET', '/api/packages/versions/new', (request) {
     return server.url.then((url) {
       expect(request.headers.value('authorization'),
           equals('Bearer access token'));