contrib: catch bitcoin-cli RPC call errors in getcoins.py
contrib: catch bitcoin-cli RPC call errors in getcoins.py

domob1812/namecore,tecnovert/particl-core,ajtowns/bitcoin,prusnak/bitcoin,achow101/bitcoin,bitcoinknots/bitcoin,dscotese/bitcoin,Xekyo/bitcoin,GroestlCoin/GroestlCoin,pataquets/namecoin-core,fanquake/bitcoin,kallewoof/bitcoin,MarcoFalke/bitcoin,namecoin/namecoin-core,fujicoin/fujicoin,bitcoin/bitcoin,namecoin/namecoin-core,particl/particl-core,pataquets/namecoin-core,jamesob/bitcoin,GroestlCoin/bitcoin,yenliangl/bitcoin,GroestlCoin/bitcoin,jambolo/bitcoin,pataquets/namecoin-core,sipsorcery/bitcoin,particl/particl-core,domob1812/bitcoin,fanquake/bitcoin,kallewoof/bitcoin,domob1812/namecore,anditto/bitcoin,mruddy/bitcoin,yenliangl/bitcoin,bitcoinsSG/bitcoin,bitcoin/bitcoin,bitcoin/bitcoin,anditto/bitcoin,namecoin/namecore,achow101/bitcoin,bitcoin/bitcoin,tecnovert/particl-core,mruddy/bitcoin,domob1812/bitcoin,dscotese/bitcoin,AkioNak/bitcoin,mruddy/bitcoin,fanquake/bitcoin,prusnak/bitcoin,instagibbs/bitcoin,anditto/bitcoin,GroestlCoin/GroestlCoin,sipsorcery/bitcoin,tecnovert/particl-core,mm-s/bitcoin,jlopp/statoshi,andreaskern/bitcoin,GroestlCoin/bitcoin,fanquake/bitcoin,dscotese/bitcoin,anditto/bitcoin,bitcoinknots/bitcoin,jambolo/bitcoin,ajtowns/bitcoin,instagibbs/bitcoin,sstone/bitcoin,sstone/bitcoin,sipsorcery/bitcoin,prusnak/bitcoin,MarcoFalke/bitcoin,instagibbs/bitcoin,sipsorcery/bitcoin,MarcoFalke/bitcoin,bitcoin/bitcoin,achow101/bitcoin,jlopp/statoshi,GroestlCoin/GroestlCoin,bitcoinsSG/bitcoin,GroestlCoin/bitcoin,GroestlCoin/bitcoin,GroestlCoin/bitcoin,lateminer/bitcoin,MarcoFalke/bitcoin,jambolo/bitcoin,kallewoof/bitcoin,achow101/bitcoin,kallewoof/bitcoin,AkioNak/bitcoin,namecoin/namecore,mruddy/bitcoin,kallewoof/bitcoin,instagibbs/bitcoin,pataquets/namecoin-core,domob1812/namecore,domob1812/bitcoin,jlopp/statoshi,sstone/bitcoin,mruddy/bitcoin,AkioNak/bitcoin,domob1812/bitcoin,namecoin/namecore,AkioNak/bitcoin,domob1812/bitcoin,instagibbs/bitcoin,prusnak/bitcoin,domob1812/bitcoin,tecnovert/particl-core,anditto/bitcoin,instagibbs/bitcoin,sipsorcery/bitcoin,achow101/bitcoin,namecoin/namecoin-core,andreaskern/bitcoin,fanquake/bitcoin,jambolo/bitcoin,MarcoFalke/bitcoin,andreaskern/bitcoin,yenliangl/bitcoin,tecnovert/particl-core,prusnak/bitcoin,jambolo/bitcoin,jlopp/statoshi,pataquets/namecoin-core,bitcoinknots/bitcoin,ajtowns/bitcoin,bitcoinsSG/bitcoin,lateminer/bitcoin,domob1812/namecore,yenliangl/bitcoin,jamesob/bitcoin,mm-s/bitcoin,particl/particl-core,kallewoof/bitcoin,bitcoinknots/bitcoin,pataquets/namecoin-core,ajtowns/bitcoin,mm-s/bitcoin,jlopp/statoshi,jlopp/statoshi,namecoin/namecoin-core,Xekyo/bitcoin,ajtowns/bitcoin,AkioNak/bitcoin,mm-s/bitcoin,dscotese/bitcoin,dscotese/bitcoin,sstone/bitcoin,anditto/bitcoin,andreaskern/bitcoin,Xekyo/bitcoin,namecoin/namecore,GroestlCoin/GroestlCoin,bitcoinknots/bitcoin,domob1812/namecore,namecoin/namecore,sstone/bitcoin,jamesob/bitcoin,achow101/bitcoin,namecoin/namecore,mruddy/bitcoin,domob1812/namecore,prusnak/bitcoin,jamesob/bitcoin,namecoin/namecoin-core,fujicoin/fujicoin,dscotese/bitcoin,Xekyo/bitcoin,tecnovert/particl-core,yenliangl/bitcoin,fujicoin/fujicoin,jamesob/bitcoin,GroestlCoin/GroestlCoin,lateminer/bitcoin,sipsorcery/bitcoin,AkioNak/bitcoin,lateminer/bitcoin,bitcoinsSG/bitcoin,fanquake/bitcoin,bitcoinsSG/bitcoin,fujicoin/fujicoin,bitcoin/bitcoin,particl/particl-core,mm-s/bitcoin,lateminer/bitcoin,MarcoFalke/bitcoin,lateminer/bitcoin,fujicoin/fujicoin,mm-s/bitcoin,namecoin/namecoin-core,Xekyo/bitcoin,jamesob/bitcoin,particl/particl-core,fujicoin/fujicoin,sstone/bitcoin,andreaskern/bitcoin,andreaskern/bitcoin,jambolo/bitcoin,GroestlCoin/GroestlCoin,particl/particl-core,bitcoinsSG/bitcoin,yenliangl/bitcoin,ajtowns/bitcoin,Xekyo/bitcoin