Fix call to RunHook in CMDLand

After https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/994241
RunHooks take a parallel parameter.
This call was not fixed in initial CL.

TBR=agable@chromium.org

Change-Id: Ic2a076afbd8ef61e3bb12473f43e1e7eab273825
Reviewed-on: https://chromium-review.googlesource.com/1011613
Commit-Queue: Edward Lesmes <ehmaldonado@chromium.org>
Reviewed-by: Edward Lesmes <ehmaldonado@chromium.org>
diff --git a/tests/git_cl_test.py b/tests/git_cl_test.py
index ee6fe3b..b138c65 100755
--- a/tests/git_cl_test.py
+++ b/tests/git_cl_test.py
@@ -2928,7 +2928,10 @@
     cl._codereview_impl.SubmitIssue = lambda wait_for_merge: None
     out = StringIO.StringIO()
     self.mock(sys, 'stdout', out)
-    self.assertEqual(0, cl.CMDLand(force=True, bypass_hooks=True, verbose=True))
+    self.assertEqual(0, cl.CMDLand(force=True,
+                                   bypass_hooks=True,
+                                   verbose=True,
+                                   parallel=False))
     self.assertRegexpMatches(out.getvalue(), 'Issue.*123 has been submitted')
     self.assertRegexpMatches(out.getvalue(), 'Landed as: .*deadbeef')