Mark oauth2 and pub_uploader as flaky. :(

Review URL: https://codereview.chromium.org//12251008

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge@18416 260f80e4-7a28-3924-810f-c04153c831b5

test/pub.status

@@ -2,6 +2,10 @@
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
+# TODO(rnystrom): These tests are still flaky. # Issue 8511
+oauth2_test: Pass,Fail
+pub_uploader_test: Pass,Fail
+
 # Pub only runs on the VM, so just rule out all compilers.
 [ $compiler == dart2js || $compiler == dart2dart || $compiler == dartc ]
 *: Skip