test: use MiniWallet (P2PK mode) for feature_dersig.py
test: use MiniWallet (P2PK mode) for feature_dersig.py

This test can now be run even with the Bitcoin Core wallet disabled.

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