Enable OAuth2 by default.

tests/submit-from-new-dir.sh

 #!/usr/bin/env bash
 
 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # Check that we're able to submit from a directory that doesn't exist on the
 # trunk.  This tests for a previous bug where we ended up with an invalid CWD
 # after switching to the merge branch.
 
@@ skipping 10 matching lines @@
   git config rietveld.server localhost:10000
 
   # Create a branch and give it an issue.
   git checkout -q -b new
   mkdir dir
   cd dir
   echo "some work done on a branch" >> test
   git add test; git commit -q -m "branch work"
   export GIT_EDITOR=$(which true)
   test_expect_success "upload succeeds" \
-    "$GIT_CL upload -m test master | grep -q 'Issue created'"
+    "$GIT_CL upload --no-oauth2 -m test master | grep -q 'Issue created'"
   test_expect_success "git-cl dcommits ok" \
-    "$GIT_CL dcommit -f"
+    "$GIT_CL dcommit -f --no-oauth2"
 )
 
 SUCCESS=$?
 
 cleanup
 
 if [ $SUCCESS == 0 ]; then
   echo PASS
 fi