Re-calculate node value after push down, closes google/e2e-key-server#111
Re-calculate node value after push down, closes google/e2e-key-server#111

cesarghali/keytransparency,google/keytransparency,AMarcedone/keytransparency,alsophian/keytransparency,google/keytransparency,gdbelvin/keytransparency,alsophian/keytransparency,gdbelvin/keytransparency,cesarghali/keytransparency,AMarcedone/keytransparency