test: ensure banlist can be read from disk after restart
test: ensure banlist can be read from disk after restart

With `banlist.dat` (being written in addrv1 format) if we would try to
write a Tor v3 subnet, it would serialize as a dummy-all-0s IPv6
address and subsequently, when deserialized will not result in the same
subnet.

This problem does not exist with `banlist.json` where the data is saved
in textual, human-readable form.

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