Pass --no-renames to git diff

If ~/.gitconfig contains:
	[diff]
		renames = "true"
then git diff --name-status will produce output that confuses the parsing
in svm.GIT.CaptureStatus and git diff will produce output that confuses the
patch command on trybots.  Passing --no-renames explicitly counteracts this.

Review URL: https://chromiumcodereview.appspot.com/16057018

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@203778 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/tests/git_cl_test.py b/tests/git_cl_test.py
index ca1aff2..9535f9c 100755
--- a/tests/git_cl_test.py
+++ b/tests/git_cl_test.py
@@ -162,7 +162,7 @@
       ] + cls._git_sanity_checks('fake_ancestor_sha', 'master') + [
       ((['git', '--no-pager', 'rev-parse', '--show-cdup'],), ''),
       ((['git', '--no-pager', 'rev-parse', 'HEAD'],), '12345'),
-      ((['git', '--no-pager', 'diff', '--name-status', '-r',
+      ((['git', '--no-pager', 'diff', '--name-status', '--no-renames', '-r',
          'fake_ancestor_sha...', '.'],),
         'M\t.gitignore\n'),
       ((['git', '--no-pager', 'config', 'branch.master.rietveldissue'],), ''),
@@ -287,7 +287,7 @@
       ((['git', '--no-pager', 'rev-parse', 'HEAD'],),
           '00ff397798ea57439712ed7e04ab96e13969ef40'),
       ((['git', '--no-pager',
-         'diff', '--name-status', '-r', 'fake_ancestor_sha...',
+         'diff', '--name-status', '--no-renames', '-r', 'fake_ancestor_sha...',
          '.'],),
         'M\tPRESUBMIT.py'),
       ((['git', '--no-pager',
@@ -533,7 +533,8 @@
         ((['git', '--no-pager', 'rev-parse', '--show-cdup'],), ''),
         ((['git', '--no-pager', 'rev-parse', 'HEAD'],), '12345'),
         ((['git', '--no-pager',
-           'diff', '--name-status', '-r', 'fake_ancestor_sha...', '.'],),
+           'diff', '--name-status', '--no-renames', '-r',
+           'fake_ancestor_sha...', '.'],),
          'M\t.gitignore\n'),
         ((['git', '--no-pager', 'config', 'branch.master.rietveldissue'],), ''),
         ((['git', '--no-pager',