git cl creds-check: add empty line to clearly indicate report.

R=sergiyb@chromium.org
BUG=689543

Change-Id: Ifb0bc9a03da09cb81ba94c310ae59cfee69b7de1
Reviewed-on: https://chromium-review.googlesource.com/461137
Reviewed-by: Sergiy Byelozyorov <sergiyb@chromium.org>
Commit-Queue: Andrii Shyshkalov <tandrii@chromium.org>

git_cl.py

@@ -3722,7 +3722,7 @@ class _GitCookiesChecker(object):
     problems = [False]
     def add_problem():
       if not problems[0]:
-        print('.gitcookies problem report:\n')
+        print('\n\n.gitcookies problem report:\n')
       problems[0] = True
 
     if self.has_generic_host():

tests/git_cl_test.py

@@ -513,7 +513,7 @@ class GitCookiesCheckerTest(TestCase):
       expected = f.read()
     def by_line(text):
       return [l.rstrip() for l in text.rstrip().splitlines()]
-    self.assertEqual(by_line(sys.stdout.getvalue()), by_line(expected))
+    self.assertEqual(by_line(sys.stdout.getvalue().strip()), by_line(expected))
 
 class TestGitCl(TestCase):
   def setUp(self):