Replaced an import of OpenPNM, which was overzealoulsy removed in the Python 3.3 conversion
Replaced an import of OpenPNM, which was overzealoulsy removed in the Python 3.3 conversion


Former-commit-id: 3aa123e009277b2a922511ceb38bfe122c8be298
Former-commit-id: 82300e29edfa3df5271a0261881e5b37e4464a91
PMEAL/OpenPNM,amdouglas/OpenPNM,stadelmanma/OpenPNM,TomTranter/OpenPNM,amdouglas/OpenPNM