fixed namespace bug in using the knownfailureif decorator
fixed namespace bug in using the knownfailureif decorator

zasdfgbnm/qutip,anubhavvardhan/qutip,cgranade/qutip,zasdfgbnm/qutip,qutip/qutip,cgranade/qutip,anubhavvardhan/qutip,qutip/qutip