Fixing inadvertant CQ breakage from depot tools change.

rietveld.py

Index: rietveld.py
diff --git a/rietveld.py b/rietveld.py
index 4b70ec3a16d3357cf83d41ee5be103a3ac642483..88a1b29aea875690e20159c0613fbfe04c1cdb82 100644
--- a/rietveld.py
+++ b/rietveld.py
@@ -40,6 +40,9 @@ class Rietveld(object):
   """Accesses rietveld."""
   def __init__(self, url, email, password, extra_headers=None):
     self.url = url.rstrip('/')
+    # Email and password are accessed by commit queue, keep them.
+    self.email = email
+    self.password = password
     # TODO(maruel): It's not awesome but maybe necessary to retrieve the value.
     # It happens when the presubmit check is ran out of process, the cookie
     # needed to be recreated from the credentials. Instead, it should pass the