[test] Round target fee to 8 decimals in assert_fee_amount
[test] Round target fee to 8 decimals in assert_fee_amount

The output would produce arbitrary number of decimal points, sometimes resulting in 9 decimals:
AssertionError: Fee of 0.00000415 BTC too low! (Should be 0.000006175 BTC)
The above looks like the expected fee is 6175 sats when in reality it's 618.

litecoin-project/litecoin,alecalve/bitcoin,alecalve/bitcoin,ericshawlinux/bitcoin,mm-s/bitcoin,stamhe/bitcoin,bitcoinknots/bitcoin,ahmedbodi/vertcoin,practicalswift/bitcoin,untrustbank/litecoin,rnicoll/dogecoin,fujicoin/fujicoin,practicalswift/bitcoin,namecoin/namecoin-core,Christewart/bitcoin,bitcoin/bitcoin,thrasher-/litecoin,thrasher-/litecoin,n1bor/bitcoin,r8921039/bitcoin,jmcorgan/bitcoin,tjps/bitcoin,DigitalPandacoin/pandacoin,GroestlCoin/bitcoin,domob1812/bitcoin,afk11/bitcoin,Xekyo/bitcoin,bespike/litecoin,myriadteam/myriadcoin,ajtowns/bitcoin,fujicoin/fujicoin,DigitalPandacoin/pandacoin,digibyte/digibyte,TheBlueMatt/bitcoin,GroestlCoin/GroestlCoin,rawodb/bitcoin,donaloconnor/bitcoin,myriadcoin/myriadcoin,ajtowns/bitcoin,practicalswift/bitcoin,mm-s/bitcoin,sstone/bitcoin,MarcoFalke/bitcoin,Kogser/bitcoin,ElementsProject/elements,paveljanik/bitcoin,cdecker/bitcoin,MeshCollider/bitcoin,kallewoof/bitcoin,mruddy/bitcoin,droark/bitcoin,achow101/bitcoin,lbryio/lbrycrd,jtimon/bitcoin,mruddy/bitcoin,DigitalPandacoin/pandacoin,ElementsProject/elements,tecnovert/particl-core,sipsorcery/bitcoin,globaltoken/globaltoken,ericshawlinux/bitcoin,bitcoinsSG/bitcoin,fujicoin/fujicoin,jamesob/bitcoin,TheBlueMatt/bitcoin,h4x3rotab/BTCGPU,mitchellcash/bitcoin,Xekyo/bitcoin,andreaskern/bitcoin,jamesob/bitcoin,domob1812/namecore,gjhiggins/vcoincore,AkioNak/bitcoin,Flowdalic/bitcoin,mitchellcash/bitcoin,Flowdalic/bitcoin,FeatherCoin/Feathercoin,fanquake/bitcoin,bespike/litecoin,practicalswift/bitcoin,TheBlueMatt/bitcoin,paveljanik/bitcoin,midnightmagic/bitcoin,midnightmagic/bitcoin,yenliangl/bitcoin,joshrabinowitz/bitcoin,BTCGPU/BTCGPU,particl/particl-core,guncoin/guncoin,pstratem/bitcoin,RHavar/bitcoin,qtumproject/qtum,alecalve/bitcoin,domob1812/namecore,jtimon/bitcoin,OmniLayer/omnicore,domob1812/bitcoin,BTCGPU/BTCGPU,kazcw/bitcoin,fujicoin/fujicoin,apoelstra/bitcoin,mruddy/bitcoin,instagibbs/bitcoin,mitchellcash/bitcoin,monacoinproject/monacoin,n1bor/bitcoin,mitchellcash/bitcoin,mitchellcash/bitcoin,monacoinproject/monacoin,tecnovert/particl-core,ahmedbodi/vertcoin,paveljanik/bitcoin,apoelstra/bitcoin,EthanHeilman/bitcoin,namecoin/namecore,domob1812/namecore,ajtowns/bitcoin,anditto/bitcoin,Sjors/bitcoin,jambolo/bitcoin,dscotese/bitcoin,GlobalBoost/GlobalBoost,mruddy/bitcoin,pataquets/namecoin-core,lbryio/lbrycrd,cdecker/bitcoin,globaltoken/globaltoken,tecnovert/particl-core,h4x3rotab/BTCGPU,BTCGPU/BTCGPU,MeshCollider/bitcoin,Kogser/bitcoin,droark/bitcoin,kazcw/bitcoin,prusnak/bitcoin,Kogser/bitcoin,GroestlCoin/bitcoin,jtimon/bitcoin,peercoin/peercoin,vertcoin/vertcoin,practicalswift/bitcoin,r8921039/bitcoin,MeshCollider/bitcoin,joshrabinowitz/bitcoin,namecoin/namecoin-core,pstratem/bitcoin,r8921039/bitcoin,apoelstra/bitcoin,sebrandon1/bitcoin,afk11/bitcoin,lbryio/lbrycrd,EthanHeilman/bitcoin,lateminer/bitcoin,Xekyo/bitcoin,domob1812/huntercore,bitcoin/bitcoin,ahmedbodi/vertcoin,Bushstar/UFO-Project,MarcoFalke/bitcoin,fujicoin/fujicoin,h4x3rotab/BTCGPU,wellenreiter01/Feathercoin,rnicoll/bitcoin,guncoin/guncoin,jonasschnelli/bitcoin,kallewoof/bitcoin,pataquets/namecoin-core,namecoin/namecore,CryptArc/bitcoin,bitcoin/bitcoin,tjps/bitcoin,Bushstar/UFO-Project,Flowdalic/bitcoin,wellenreiter01/Feathercoin,ericshawlinux/bitcoin,qtumproject/qtum,Xekyo/bitcoin,domob1812/huntercore,DigitalPandacoin/pandacoin,rawodb/bitcoin,lbryio/lbrycrd,qtumproject/qtum,jonasschnelli/bitcoin,kallewoof/bitcoin,litecoin-project/litecoin,jambolo/bitcoin,GlobalBoost/GlobalBoost,vertcoin/vertcoin,GroestlCoin/GroestlCoin,jlopp/statoshi,domob1812/huntercore,Christewart/bitcoin,FeatherCoin/Feathercoin,guncoin/guncoin,qtumproject/qtum,prusnak/bitcoin,prusnak/bitcoin,bitcoin/bitcoin,Kogser/bitcoin,sebrandon1/bitcoin,jtimon/bitcoin,Kogser/bitcoin,afk11/bitcoin,jonasschnelli/bitcoin,GlobalBoost/GlobalBoost,bitcoinknots/bitcoin,prusnak/bitcoin,peercoin/peercoin,jnewbery/bitcoin,kallewoof/bitcoin,fanquake/bitcoin,tecnovert/particl-core,GroestlCoin/GroestlCoin,sstone/bitcoin,gjhiggins/vcoincore,domob1812/bitcoin,bespike/litecoin,andreaskern/bitcoin,domob1812/huntercore,GroestlCoin/GroestlCoin,vertcoin/vertcoin,mitchellcash/bitcoin,stamhe/bitcoin,mm-s/bitcoin,FeatherCoin/Feathercoin,Kogser/bitcoin,rnicoll/bitcoin,myriadteam/myriadcoin,bitcoinsSG/bitcoin,namecoin/namecore,anditto/bitcoin,EthanHeilman/bitcoin,ElementsProject/elements,jnewbery/bitcoin,litecoin-project/litecoin,Christewart/bitcoin,AkioNak/bitcoin,instagibbs/bitcoin,myriadteam/myriadcoin,donaloconnor/bitcoin,randy-waterhouse/bitcoin,mm-s/bitcoin,Bushstar/UFO-Project,rawodb/bitcoin,lbryio/lbrycrd,lateminer/bitcoin,yenliangl/bitcoin,gjhiggins/vcoincore,ericshawlinux/bitcoin,ericshawlinux/bitcoin,nikkitan/bitcoin,randy-waterhouse/bitcoin,h4x3rotab/BTCGPU,rnicoll/dogecoin,apoelstra/bitcoin,mm-s/bitcoin,guncoin/guncoin,jmcorgan/bitcoin,paveljanik/bitcoin,domob1812/namecore,TheBlueMatt/bitcoin,domob1812/bitcoin,Flowdalic/bitcoin,r8921039/bitcoin,kallewoof/bitcoin,RHavar/bitcoin,jambolo/bitcoin,Sjors/bitcoin,instagibbs/bitcoin,afk11/bitcoin,untrustbank/litecoin,BTCGPU/BTCGPU,namecoin/namecore,Kogser/bitcoin,myriadcoin/myriadcoin,rawodb/bitcoin,MeshCollider/bitcoin,Kogser/bitcoin,jlopp/statoshi,cdecker/bitcoin,myriadteam/myriadcoin,n1bor/bitcoin,qtumproject/qtum,r8921039/bitcoin,bitcoin/bitcoin,Xekyo/bitcoin,RHavar/bitcoin,randy-waterhouse/bitcoin,bespike/litecoin,peercoin/peercoin,apoelstra/bitcoin,stamhe/bitcoin,peercoin/peercoin,sipsorcery/bitcoin,Kogser/bitcoin,yenliangl/bitcoin,rnicoll/dogecoin,afk11/bitcoin,domob1812/bitcoin,practicalswift/bitcoin,Xekyo/bitcoin,particl/particl-core,lateminer/bitcoin,donaloconnor/bitcoin,donaloconnor/bitcoin,jambolo/bitcoin,ahmedbodi/vertcoin,dscotese/bitcoin,MarcoFalke/bitcoin,achow101/bitcoin,instagibbs/bitcoin,digibyte/digibyte,vertcoin/vertcoin,lateminer/bitcoin,cdecker/bitcoin,nikkitan/bitcoin,apoelstra/bitcoin,JeremyRubin/bitcoin,lbryio/lbrycrd,pataquets/namecoin-core,AkioNak/bitcoin,yenliangl/bitcoin,droark/bitcoin,JeremyRubin/bitcoin,alecalve/bitcoin,sebrandon1/bitcoin,sebrandon1/bitcoin,prusnak/bitcoin,cdecker/bitcoin,sipsorcery/bitcoin,donaloconnor/bitcoin,myriadteam/myriadcoin,n1bor/bitcoin,globaltoken/globaltoken,Christewart/bitcoin,jamesob/bitcoin,RHavar/bitcoin,namecoin/namecore,achow101/bitcoin,Sjors/bitcoin,anditto/bitcoin,EthanHeilman/bitcoin,ElementsProject/elements,paveljanik/bitcoin,instagibbs/bitcoin,GlobalBoost/GlobalBoost,FeatherCoin/Feathercoin,randy-waterhouse/bitcoin,gjhiggins/vcoincore,joshrabinowitz/bitcoin,CryptArc/bitcoin,vmp32k/litecoin,pataquets/namecoin-core,n1bor/bitcoin,jonasschnelli/bitcoin,monacoinproject/monacoin,stamhe/bitcoin,ajtowns/bitcoin,MarcoFalke/bitcoin,dscotese/bitcoin,tjps/bitcoin,Bushstar/UFO-Project,digibyte/digibyte,dscotese/bitcoin,mruddy/bitcoin,anditto/bitcoin,domob1812/huntercore,sipsorcery/bitcoin,Flowdalic/bitcoin,nikkitan/bitcoin,joshrabinowitz/bitcoin,andreaskern/bitcoin,kallewoof/bitcoin,kazcw/bitcoin,jambolo/bitcoin,sipsorcery/bitcoin,vmp32k/litecoin,andreaskern/bitcoin,anditto/bitcoin,nikkitan/bitcoin,joshrabinowitz/bitcoin,andreaskern/bitcoin,nikkitan/bitcoin,wellenreiter01/Feathercoin,JeremyRubin/bitcoin,peercoin/peercoin,bitcoin/bitcoin,guncoin/guncoin,rnicoll/bitcoin,jmcorgan/bitcoin,rawodb/bitcoin,pataquets/namecoin-core,namecoin/namecoin-core,digibyte/digibyte,AkioNak/bitcoin,particl/particl-core,particl/particl-core,tjps/bitcoin,randy-waterhouse/bitcoin,gjhiggins/vcoincore,alecalve/bitcoin,jtimon/bitcoin,thrasher-/litecoin,GroestlCoin/bitcoin,fanquake/bitcoin,OmniLayer/omnicore,untrustbank/litecoin,Christewart/bitcoin,untrustbank/litecoin,bitcoinsSG/bitcoin,tjps/bitcoin,dscotese/bitcoin,jnewbery/bitcoin,TheBlueMatt/bitcoin,FeatherCoin/Feathercoin,ElementsProject/elements,pstratem/bitcoin,instagibbs/bitcoin,yenliangl/bitcoin,MarcoFalke/bitcoin,domob1812/namecore,thrasher-/litecoin,rnicoll/bitcoin,OmniLayer/omnicore,BTCGPU/BTCGPU,jlopp/statoshi,rnicoll/dogecoin,rnicoll/dogecoin,GlobalBoost/GlobalBoost,bitcoinknots/bitcoin,jambolo/bitcoin,sebrandon1/bitcoin,yenliangl/bitcoin,tjps/bitcoin,andreaskern/bitcoin,peercoin/peercoin,Sjors/bitcoin,litecoin-project/litecoin,jamesob/bitcoin,untrustbank/litecoin,BTCGPU/BTCGPU,ericshawlinux/bitcoin,DigitalPandacoin/pandacoin,ahmedbodi/vertcoin,mm-s/bitcoin,monacoinproject/monacoin,myriadcoin/myriadcoin,nikkitan/bitcoin,cdecker/bitcoin,achow101/bitcoin,jlopp/statoshi,AkioNak/bitcoin,AkioNak/bitcoin,randy-waterhouse/bitcoin,myriadcoin/myriadcoin,fujicoin/fujicoin,achow101/bitcoin,vmp32k/litecoin,vertcoin/vertcoin,droark/bitcoin,Kogser/bitcoin,OmniLayer/omnicore,midnightmagic/bitcoin,namecoin/namecoin-core,alecalve/bitcoin,vmp32k/litecoin,MeshCollider/bitcoin,lateminer/bitcoin,litecoin-project/litecoin,ajtowns/bitcoin,pstratem/bitcoin,fanquake/bitcoin,h4x3rotab/BTCGPU,droark/bitcoin,prusnak/bitcoin,EthanHeilman/bitcoin,GroestlCoin/bitcoin,GlobalBoost/GlobalBoost,wellenreiter01/Feathercoin,pataquets/namecoin-core,lbryio/lbrycrd,namecoin/namecore,GlobalBoost/GlobalBoost,wellenreiter01/Feathercoin,gjhiggins/vcoincore,pstratem/bitcoin,vmp32k/litecoin,sstone/bitcoin,bitcoinsSG/bitcoin,TheBlueMatt/bitcoin,Kogser/bitcoin,sstone/bitcoin,EthanHeilman/bitcoin,droark/bitcoin,stamhe/bitcoin,Bushstar/UFO-Project,namecoin/namecoin-core,FeatherCoin/Feathercoin,pstratem/bitcoin,digibyte/digibyte,globaltoken/globaltoken,jonasschnelli/bitcoin,lateminer/bitcoin,rnicoll/bitcoin,jnewbery/bitcoin,digibyte/digibyte,qtumproject/qtum,vertcoin/vertcoin,jmcorgan/bitcoin,Bushstar/UFO-Project,bespike/litecoin,fanquake/bitcoin,OmniLayer/omnicore,MeshCollider/bitcoin,RHavar/bitcoin,sstone/bitcoin,jamesob/bitcoin,midnightmagic/bitcoin,myriadcoin/myriadcoin,MarcoFalke/bitcoin,jamesob/bitcoin,domob1812/bitcoin,kazcw/bitcoin,midnightmagic/bitcoin,fanquake/bitcoin,CryptArc/bitcoin,paveljanik/bitcoin,dscotese/bitcoin,OmniLayer/omnicore,sstone/bitcoin,sebrandon1/bitcoin,RHavar/bitcoin,CryptArc/bitcoin,untrustbank/litecoin,kazcw/bitcoin,joshrabinowitz/bitcoin,particl/particl-core,jmcorgan/bitcoin,jmcorgan/bitcoin,kazcw/bitcoin,GroestlCoin/GroestlCoin,namecoin/namecoin-core,domob1812/huntercore,donaloconnor/bitcoin,jtimon/bitcoin,sipsorcery/bitcoin,globaltoken/globaltoken,myriadteam/myriadcoin,jlopp/statoshi,bitcoinsSG/bitcoin,CryptArc/bitcoin,GroestlCoin/GroestlCoin,GroestlCoin/bitcoin,monacoinproject/monacoin,particl/particl-core,Flowdalic/bitcoin,midnightmagic/bitcoin,thrasher-/litecoin,thrasher-/litecoin,jnewbery/bitcoin,CryptArc/bitcoin,GroestlCoin/bitcoin,achow101/bitcoin,tecnovert/particl-core,r8921039/bitcoin,stamhe/bitcoin,JeremyRubin/bitcoin,mruddy/bitcoin,wellenreiter01/Feathercoin,JeremyRubin/bitcoin,JeremyRubin/bitcoin,monacoinproject/monacoin,anditto/bitcoin,afk11/bitcoin,tecnovert/particl-core,Christewart/bitcoin,qtumproject/qtum,globaltoken/globaltoken,rawodb/bitcoin,bespike/litecoin,vmp32k/litecoin,n1bor/bitcoin,bitcoinsSG/bitcoin,ahmedbodi/vertcoin,Kogser/bitcoin,jlopp/statoshi,DigitalPandacoin/pandacoin,h4x3rotab/BTCGPU,ajtowns/bitcoin,ElementsProject/elements,litecoin-project/litecoin,Sjors/bitcoin,rnicoll/bitcoin,bitcoinknots/bitcoin,domob1812/namecore,myriadcoin/myriadcoin,bitcoinknots/bitcoin,guncoin/guncoin