Rename util to valve_util (python3 compat)
Rename util to valve_util (python3 compat)

trentindav/faucet,wackerly/faucet,trungdtbk/faucet,Bairdo/faucet,byllyfish/faucet,isomer/faucet,trentindav/faucet,Bairdo/faucet,shivarammysore/faucet,byllyfish/faucet,anarkiwi/faucet,wackerly/faucet,REANNZ/faucet,isomer/faucet,shivarammysore/faucet,REANNZ/faucet,mwutzke/faucet,faucetsdn/faucet,trungdtbk/faucet,anarkiwi/faucet,mwutzke/faucet,gizmoguy/faucet,gizmoguy/faucet,faucetsdn/faucet