Moved find_duplicates to the network_health method
Moved find_duplicates to the network_health method


Former-commit-id: 6c58f5003ba3da523881d85f9d51ee5529c98919
Former-commit-id: 2279f4af0689152555cfc826154feb4ecf798d09
amdouglas/OpenPNM,TomTranter/OpenPNM,stadelmanma/OpenPNM,PMEAL/OpenPNM,amdouglas/OpenPNM