Add UpgradeToHttps() to reliably and forcibly upgrade all urls to https

tests/git_cl_test.py

 #!/usr/bin/env python
 # Copyright (c) 2011 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.
 
 """Unit tests for git_cl.py."""
 
 import os
 import StringIO
 import sys
@@ skipping 87 matching lines @@
 
   @staticmethod
   def _git_upload_calls():
     return [
         (['git', 'config', 'rietveld.cc'], ''),
         (['git', 'config', '--get-regexp', '^svn-remote\\.'], (('', None), 0)),
         (['git', 'rev-parse', '--show-cdup'], ''),
         (['git', 'svn', 'info'], ''),
         (['git', 'config', 'branch.master.rietveldissue', '1'], ''),
         (['git', 'config', 'branch.master.rietveldserver',
-          'http://codereview.example.com'], ''),
+          'https://codereview.example.com'], ''),
         (['git', 'config', 'branch.master.rietveldpatchset', '2'], ''),
     ]
 
   @staticmethod
   def _cmd_line(description, args):
     """Returns the upload command line passed to upload.RealMain()."""
     msg = description.split('\n', 1)[0]
     return [
         'upload', '--assume_yes', '--server',
-        'http://codereview.example.com',
+        'https://codereview.example.com',
         '--message', msg,
         '--description', description
     ] + args + [
         '--cc', 'joe@example.com',
         'master...'
     ]
 
   def _run_reviewer_test(
       self,
       upload_args,
@@ skipping 84 matching lines @@
       self.mock(sys, 'stderr', mock)
       git_cl.main(['upload', '--send-mail'])
       self.fail()
     except SystemExit:
       self.assertEquals(
           'Must specify reviewers to send email.\n', mock.buf.getvalue())
 
 
 if __name__ == '__main__':
   unittest.main()