TestShell: Simplify default setting of num_nodes
TestShell: Simplify default setting of num_nodes

alecalve/bitcoin,monacoinproject/monacoin,practicalswift/bitcoin,andreaskern/bitcoin,mitchellcash/bitcoin,jlopp/statoshi,midnightmagic/bitcoin,qtumproject/qtum,pstratem/bitcoin,GroestlCoin/GroestlCoin,jambolo/bitcoin,jambolo/bitcoin,bitcoinsSG/bitcoin,ahmedbodi/vertcoin,Xekyo/bitcoin,jambolo/bitcoin,GroestlCoin/bitcoin,EthanHeilman/bitcoin,yenliangl/bitcoin,lateminer/bitcoin,particl/particl-core,JeremyRubin/bitcoin,lateminer/bitcoin,jlopp/statoshi,rnicoll/dogecoin,jnewbery/bitcoin,mm-s/bitcoin,gjhiggins/vcoincore,rnicoll/bitcoin,prusnak/bitcoin,domob1812/bitcoin,GroestlCoin/bitcoin,MarcoFalke/bitcoin,pstratem/bitcoin,MarcoFalke/bitcoin,practicalswift/bitcoin,jamesob/bitcoin,midnightmagic/bitcoin,rnicoll/dogecoin,tecnovert/particl-core,Sjors/bitcoin,alecalve/bitcoin,EthanHeilman/bitcoin,ElementsProject/elements,n1bor/bitcoin,apoelstra/bitcoin,litecoin-project/litecoin,sipsorcery/bitcoin,fujicoin/fujicoin,prusnak/bitcoin,dscotese/bitcoin,jambolo/bitcoin,namecoin/namecoin-core,DigitalPandacoin/pandacoin,tjps/bitcoin,GroestlCoin/GroestlCoin,qtumproject/qtum,mruddy/bitcoin,gjhiggins/vcoincore,achow101/bitcoin,anditto/bitcoin,tecnovert/particl-core,sipsorcery/bitcoin,namecoin/namecoin-core,namecoin/namecore,mm-s/bitcoin,alecalve/bitcoin,particl/particl-core,qtumproject/qtum,namecoin/namecore,bitcoinsSG/bitcoin,MeshCollider/bitcoin,n1bor/bitcoin,lateminer/bitcoin,kallewoof/bitcoin,instagibbs/bitcoin,JeremyRubin/bitcoin,ajtowns/bitcoin,instagibbs/bitcoin,practicalswift/bitcoin,sstone/bitcoin,jonasschnelli/bitcoin,cdecker/bitcoin,andreaskern/bitcoin,jnewbery/bitcoin,instagibbs/bitcoin,midnightmagic/bitcoin,Xekyo/bitcoin,Sjors/bitcoin,prusnak/bitcoin,DigitalPandacoin/pandacoin,GroestlCoin/bitcoin,ajtowns/bitcoin,mm-s/bitcoin,Xekyo/bitcoin,tecnovert/particl-core,pataquets/namecoin-core,sstone/bitcoin,kallewoof/bitcoin,AkioNak/bitcoin,domob1812/namecore,particl/particl-core,particl/particl-core,pataquets/namecoin-core,jonasschnelli/bitcoin,n1bor/bitcoin,AkioNak/bitcoin,vertcoin/vertcoin,bitcoinknots/bitcoin,mruddy/bitcoin,fanquake/bitcoin,fujicoin/fujicoin,rnicoll/bitcoin,jamesob/bitcoin,midnightmagic/bitcoin,apoelstra/bitcoin,monacoinproject/monacoin,ajtowns/bitcoin,GroestlCoin/bitcoin,EthanHeilman/bitcoin,andreaskern/bitcoin,yenliangl/bitcoin,apoelstra/bitcoin,jnewbery/bitcoin,fanquake/bitcoin,mm-s/bitcoin,apoelstra/bitcoin,tecnovert/particl-core,litecoin-project/litecoin,monacoinproject/monacoin,mitchellcash/bitcoin,litecoin-project/litecoin,cdecker/bitcoin,midnightmagic/bitcoin,prusnak/bitcoin,bitcoin/bitcoin,anditto/bitcoin,tjps/bitcoin,fanquake/bitcoin,jnewbery/bitcoin,andreaskern/bitcoin,GroestlCoin/GroestlCoin,peercoin/peercoin,monacoinproject/monacoin,MeshCollider/bitcoin,pataquets/namecoin-core,dscotese/bitcoin,ElementsProject/elements,jambolo/bitcoin,jonasschnelli/bitcoin,pstratem/bitcoin,gjhiggins/vcoincore,qtumproject/qtum,Xekyo/bitcoin,jnewbery/bitcoin,rnicoll/dogecoin,cdecker/bitcoin,DigitalPandacoin/pandacoin,peercoin/peercoin,bitcoinknots/bitcoin,qtumproject/qtum,ahmedbodi/vertcoin,litecoin-project/litecoin,jonasschnelli/bitcoin,vertcoin/vertcoin,vertcoin/vertcoin,JeremyRubin/bitcoin,peercoin/peercoin,n1bor/bitcoin,ahmedbodi/vertcoin,Xekyo/bitcoin,pstratem/bitcoin,EthanHeilman/bitcoin,mruddy/bitcoin,qtumproject/qtum,pataquets/namecoin-core,EthanHeilman/bitcoin,practicalswift/bitcoin,bitcoin/bitcoin,dscotese/bitcoin,tecnovert/particl-core,achow101/bitcoin,DigitalPandacoin/pandacoin,GroestlCoin/GroestlCoin,MeshCollider/bitcoin,litecoin-project/litecoin,pataquets/namecoin-core,mruddy/bitcoin,n1bor/bitcoin,domob1812/namecore,anditto/bitcoin,AkioNak/bitcoin,yenliangl/bitcoin,mitchellcash/bitcoin,cdecker/bitcoin,achow101/bitcoin,sstone/bitcoin,gjhiggins/vcoincore,MeshCollider/bitcoin,bitcoin/bitcoin,domob1812/bitcoin,fanquake/bitcoin,n1bor/bitcoin,sstone/bitcoin,rnicoll/bitcoin,fujicoin/fujicoin,anditto/bitcoin,peercoin/peercoin,prusnak/bitcoin,rnicoll/dogecoin,anditto/bitcoin,fujicoin/fujicoin,DigitalPandacoin/pandacoin,tjps/bitcoin,sipsorcery/bitcoin,namecoin/namecore,bitcoinknots/bitcoin,sstone/bitcoin,fujicoin/fujicoin,namecoin/namecoin-core,sipsorcery/bitcoin,apoelstra/bitcoin,mruddy/bitcoin,practicalswift/bitcoin,JeremyRubin/bitcoin,prusnak/bitcoin,domob1812/namecore,Sjors/bitcoin,GroestlCoin/GroestlCoin,AkioNak/bitcoin,anditto/bitcoin,pstratem/bitcoin,namecoin/namecore,particl/particl-core,jamesob/bitcoin,MeshCollider/bitcoin,jlopp/statoshi,jambolo/bitcoin,AkioNak/bitcoin,jonasschnelli/bitcoin,practicalswift/bitcoin,fanquake/bitcoin,alecalve/bitcoin,namecoin/namecore,domob1812/bitcoin,ahmedbodi/vertcoin,ElementsProject/elements,rnicoll/bitcoin,jlopp/statoshi,vertcoin/vertcoin,sipsorcery/bitcoin,yenliangl/bitcoin,sipsorcery/bitcoin,alecalve/bitcoin,JeremyRubin/bitcoin,pstratem/bitcoin,achow101/bitcoin,domob1812/namecore,DigitalPandacoin/pandacoin,ajtowns/bitcoin,ajtowns/bitcoin,MarcoFalke/bitcoin,bitcoin/bitcoin,namecoin/namecoin-core,tjps/bitcoin,ElementsProject/elements,rnicoll/bitcoin,qtumproject/qtum,MarcoFalke/bitcoin,EthanHeilman/bitcoin,peercoin/peercoin,instagibbs/bitcoin,JeremyRubin/bitcoin,cdecker/bitcoin,domob1812/bitcoin,jamesob/bitcoin,MarcoFalke/bitcoin,monacoinproject/monacoin,namecoin/namecoin-core,ElementsProject/elements,vertcoin/vertcoin,mm-s/bitcoin,domob1812/namecore,Sjors/bitcoin,particl/particl-core,sstone/bitcoin,achow101/bitcoin,MarcoFalke/bitcoin,rnicoll/dogecoin,bitcoinsSG/bitcoin,cdecker/bitcoin,midnightmagic/bitcoin,AkioNak/bitcoin,instagibbs/bitcoin,ElementsProject/elements,namecoin/namecore,instagibbs/bitcoin,lateminer/bitcoin,lateminer/bitcoin,bitcoin/bitcoin,apoelstra/bitcoin,dscotese/bitcoin,pataquets/namecoin-core,dscotese/bitcoin,tecnovert/particl-core,peercoin/peercoin,kallewoof/bitcoin,mitchellcash/bitcoin,jlopp/statoshi,GroestlCoin/GroestlCoin,kallewoof/bitcoin,yenliangl/bitcoin,andreaskern/bitcoin,domob1812/bitcoin,mitchellcash/bitcoin,ahmedbodi/vertcoin,bitcoinsSG/bitcoin,domob1812/namecore,yenliangl/bitcoin,gjhiggins/vcoincore,bitcoinsSG/bitcoin,bitcoin/bitcoin,ahmedbodi/vertcoin,GroestlCoin/bitcoin,kallewoof/bitcoin,monacoinproject/monacoin,mitchellcash/bitcoin,mruddy/bitcoin,ajtowns/bitcoin,domob1812/bitcoin,tjps/bitcoin,litecoin-project/litecoin,bitcoinknots/bitcoin,Sjors/bitcoin,namecoin/namecoin-core,alecalve/bitcoin,rnicoll/bitcoin,andreaskern/bitcoin,lateminer/bitcoin,vertcoin/vertcoin,fanquake/bitcoin,kallewoof/bitcoin,gjhiggins/vcoincore,jamesob/bitcoin,achow101/bitcoin,jlopp/statoshi,jamesob/bitcoin,tjps/bitcoin,MeshCollider/bitcoin,bitcoinknots/bitcoin,bitcoinsSG/bitcoin,Xekyo/bitcoin,mm-s/bitcoin,fujicoin/fujicoin,dscotese/bitcoin,GroestlCoin/bitcoin