git cl: insert "Review-Url" instead "Review URL" footer like CQ.

R=sergiyb@chromium.org

Change-Id: I2df867e381ceb1035add84563d3b444b0ee0ea94
Reviewed-on: https://chromium-review.googlesource.com/417267Reviewed-by: Sergiy Byelozyorov <sergiyb@chromium.org>
Commit-Queue: Andrii Shyshkalov <tandrii@chromium.org>

git_cl.py

@@ -4586,7 +4586,7 @@ def SendUpstream(parser, args, cmd):
     # after it. Add a period on a new line to circumvent this. Also add a space
     # before the period to make sure that Gitiles continues to correctly resolve
     # the URL.
-    commit_desc.append_footer('Review URL: %s .' % cl.GetIssueURL())
+    commit_desc.append_footer('Review-Url: %s .' % cl.GetIssueURL())
   if options.contributor:
     commit_desc.append_footer('Patch from %s.' % options.contributor)
 

tests/git_cl_test.py

@@ -749,7 +749,7 @@ class TestGitCl(TestCase):
       ((['git', 'reset', '--soft', 'fake_ancestor_sha'],), ''),
       ((['git', 'commit', '-m',
          'Issue: 12345\n\nR=john@chromium.org\n\n'
-         'Review URL: https://codereview.example.com/12345 .'],),
+         'Review-Url: https://codereview.example.com/12345 .'],),
        ''),
       ((['git', 'config', 'rietveld.force-https-commit-url'],), ''),
       ((['git',
@@ -1011,7 +1011,7 @@ class TestGitCl(TestCase):
       ((['git', 'reset', '--soft', 'fake_ancestor_sha'],), ''),
       ((['git', 'commit', '-m',
          'Issue: 123\n\nR=john@chromium.org\n\n'
-         'Review URL: https://codereview.chromium.org/123 .'],), ''),
+         'Review-Url: https://codereview.chromium.org/123 .'],), ''),
       ((['git', 'config', 'branch.feature.merge'],), 'refs/heads/master'),
       ((['git', 'config', 'branch.feature.remote'],), 'origin'),
       ((['git', 'config', '--get', 'remote.origin.url'],),
@@ -1115,8 +1115,7 @@ class TestGitCl(TestCase):
       ((['git', 'commit', '--amend', '-m',
         'Issue: 123\n\nR=john@chromium.org\n'
         '\n'
-        'Review URL: https://codereview.chromium.org/123 .\n'
-        '\n'
+        'Review-Url: https://codereview.chromium.org/123 .\n'
         'Cr-Commit-Position: refs/heads/master@{#544}\n'
         'Cr-Branched-From: refs/svn/2014@{#2208}'],), ''),
 
@@ -1130,8 +1129,7 @@ class TestGitCl(TestCase):
       ((['update_description', 123,
          'Issue: 123\n\nR=john@chromium.org\n'
          '\n'
-         'Review URL: https://codereview.chromium.org/123 .\n'
-         '\n'
+         'Review-Url: https://codereview.chromium.org/123 .\n'
          'Cr-Commit-Position: refs/heads/master@{#544}\n'
          'Cr-Branched-From: refs/svn/2014@{#2208}\n'
          'Committed: '