Elaborate on the need to re-login on Debian-based systems to use tor following usermod
Elaborate on the need to re-login on Debian-based systems to use tor following usermod

Starting bitcoind with `-onlynet=onion` immediately after adding bitcoind user to debian-tor group will yield the following notice on debug.log:

"tor: Authentication cookie /run/tor/control.authcookie could not be opened (check permissions)"

Elaborate on the need to re-login to ensure debian-tor group has been applied to bitcoind user after:

	sudo usermod -a -G debian-tor username

Verification can be done via `groups` command in shell.

jamesob/bitcoin,ahmedbodi/vertcoin,EthanHeilman/bitcoin,cdecker/bitcoin,gjhiggins/vcoincore,domob1812/bitcoin,mm-s/bitcoin,rnicoll/bitcoin,jambolo/bitcoin,ElementsProject/elements,litecoin-project/litecoin,achow101/bitcoin,mm-s/bitcoin,n1bor/bitcoin,yenliangl/bitcoin,n1bor/bitcoin,andreaskern/bitcoin,kallewoof/bitcoin,litecoin-project/litecoin,domob1812/namecore,tecnovert/particl-core,monacoinproject/monacoin,bitcoinsSG/bitcoin,vertcoin/vertcoin,instagibbs/bitcoin,FeatherCoin/Feathercoin,JeremyRubin/bitcoin,dscotese/bitcoin,kallewoof/bitcoin,instagibbs/bitcoin,wellenreiter01/Feathercoin,GroestlCoin/GroestlCoin,n1bor/bitcoin,Sjors/bitcoin,kallewoof/bitcoin,jlopp/statoshi,prusnak/bitcoin,fanquake/bitcoin,nikkitan/bitcoin,mitchellcash/bitcoin,EthanHeilman/bitcoin,pataquets/namecoin-core,JeremyRubin/bitcoin,achow101/bitcoin,fanquake/bitcoin,namecoin/namecoin-core,monacoinproject/monacoin,dscotese/bitcoin,mruddy/bitcoin,fanquake/bitcoin,sipsorcery/bitcoin,domob1812/bitcoin,monacoinproject/monacoin,sipsorcery/bitcoin,bitcoinknots/bitcoin,dscotese/bitcoin,gjhiggins/vcoincore,ajtowns/bitcoin,MeshCollider/bitcoin,jamesob/bitcoin,pstratem/bitcoin,rnicoll/dogecoin,jnewbery/bitcoin,jtimon/bitcoin,tecnovert/particl-core,mitchellcash/bitcoin,apoelstra/bitcoin,namecoin/namecore,namecoin/namecoin-core,peercoin/peercoin,dscotese/bitcoin,vertcoin/vertcoin,alecalve/bitcoin,ajtowns/bitcoin,nikkitan/bitcoin,mruddy/bitcoin,alecalve/bitcoin,mruddy/bitcoin,tjps/bitcoin,pstratem/bitcoin,bitcoinsSG/bitcoin,tjps/bitcoin,mruddy/bitcoin,litecoin-project/litecoin,tjps/bitcoin,Sjors/bitcoin,alecalve/bitcoin,bitcoin/bitcoin,ElementsProject/elements,AkioNak/bitcoin,GroestlCoin/GroestlCoin,jtimon/bitcoin,namecoin/namecoin-core,namecoin/namecore,ajtowns/bitcoin,practicalswift/bitcoin,FeatherCoin/Feathercoin,GroestlCoin/bitcoin,MeshCollider/bitcoin,jtimon/bitcoin,cdecker/bitcoin,ajtowns/bitcoin,alecalve/bitcoin,lateminer/bitcoin,monacoinproject/monacoin,pstratem/bitcoin,rnicoll/bitcoin,litecoin-project/litecoin,GroestlCoin/GroestlCoin,jambolo/bitcoin,domob1812/bitcoin,jamesob/bitcoin,ajtowns/bitcoin,jamesob/bitcoin,FeatherCoin/Feathercoin,practicalswift/bitcoin,FeatherCoin/Feathercoin,Xekyo/bitcoin,kallewoof/bitcoin,qtumproject/qtum,n1bor/bitcoin,pataquets/namecoin-core,mruddy/bitcoin,nikkitan/bitcoin,vertcoin/vertcoin,pataquets/namecoin-core,particl/particl-core,yenliangl/bitcoin,EthanHeilman/bitcoin,prusnak/bitcoin,midnightmagic/bitcoin,jtimon/bitcoin,GroestlCoin/bitcoin,mitchellcash/bitcoin,sstone/bitcoin,ahmedbodi/vertcoin,midnightmagic/bitcoin,pstratem/bitcoin,GroestlCoin/GroestlCoin,GroestlCoin/bitcoin,wellenreiter01/Feathercoin,jamesob/bitcoin,peercoin/peercoin,FeatherCoin/Feathercoin,jnewbery/bitcoin,nikkitan/bitcoin,gjhiggins/vcoincore,qtumproject/qtum,bitcoinsSG/bitcoin,JeremyRubin/bitcoin,sipsorcery/bitcoin,Xekyo/bitcoin,sipsorcery/bitcoin,alecalve/bitcoin,AkioNak/bitcoin,jlopp/statoshi,fujicoin/fujicoin,litecoin-project/litecoin,wellenreiter01/Feathercoin,EthanHeilman/bitcoin,ElementsProject/elements,achow101/bitcoin,peercoin/peercoin,peercoin/peercoin,tjps/bitcoin,nikkitan/bitcoin,yenliangl/bitcoin,tecnovert/particl-core,cdecker/bitcoin,lateminer/bitcoin,tecnovert/particl-core,Xekyo/bitcoin,rnicoll/dogecoin,achow101/bitcoin,sstone/bitcoin,practicalswift/bitcoin,MeshCollider/bitcoin,particl/particl-core,mitchellcash/bitcoin,prusnak/bitcoin,domob1812/namecore,alecalve/bitcoin,ahmedbodi/vertcoin,tjps/bitcoin,qtumproject/qtum,anditto/bitcoin,sstone/bitcoin,prusnak/bitcoin,FeatherCoin/Feathercoin,jambolo/bitcoin,wellenreiter01/Feathercoin,andreaskern/bitcoin,namecoin/namecoin-core,midnightmagic/bitcoin,ahmedbodi/vertcoin,domob1812/namecore,apoelstra/bitcoin,bitcoin/bitcoin,yenliangl/bitcoin,sipsorcery/bitcoin,litecoin-project/litecoin,yenliangl/bitcoin,sstone/bitcoin,DigitalPandacoin/pandacoin,ElementsProject/elements,namecoin/namecore,jonasschnelli/bitcoin,MarcoFalke/bitcoin,nikkitan/bitcoin,vertcoin/vertcoin,lateminer/bitcoin,MeshCollider/bitcoin,dscotese/bitcoin,namecoin/namecore,instagibbs/bitcoin,namecoin/namecoin-core,GroestlCoin/bitcoin,domob1812/namecore,particl/particl-core,tecnovert/particl-core,rnicoll/dogecoin,mm-s/bitcoin,jamesob/bitcoin,rnicoll/dogecoin,apoelstra/bitcoin,Sjors/bitcoin,monacoinproject/monacoin,bitcoinsSG/bitcoin,AkioNak/bitcoin,Xekyo/bitcoin,bitcoinsSG/bitcoin,anditto/bitcoin,cdecker/bitcoin,fanquake/bitcoin,GroestlCoin/GroestlCoin,jtimon/bitcoin,namecoin/namecore,pataquets/namecoin-core,MarcoFalke/bitcoin,dscotese/bitcoin,GroestlCoin/GroestlCoin,jnewbery/bitcoin,jnewbery/bitcoin,sstone/bitcoin,bitcoinknots/bitcoin,DigitalPandacoin/pandacoin,bitcoinknots/bitcoin,andreaskern/bitcoin,cdecker/bitcoin,domob1812/bitcoin,pataquets/namecoin-core,n1bor/bitcoin,JeremyRubin/bitcoin,practicalswift/bitcoin,mm-s/bitcoin,AkioNak/bitcoin,bitcoinsSG/bitcoin,bitcoinknots/bitcoin,jnewbery/bitcoin,sipsorcery/bitcoin,Sjors/bitcoin,pataquets/namecoin-core,DigitalPandacoin/pandacoin,pstratem/bitcoin,jtimon/bitcoin,instagibbs/bitcoin,sstone/bitcoin,peercoin/peercoin,domob1812/bitcoin,particl/particl-core,jonasschnelli/bitcoin,fujicoin/fujicoin,bitcoin/bitcoin,midnightmagic/bitcoin,anditto/bitcoin,MarcoFalke/bitcoin,pstratem/bitcoin,midnightmagic/bitcoin,MarcoFalke/bitcoin,MeshCollider/bitcoin,andreaskern/bitcoin,bitcoin/bitcoin,anditto/bitcoin,mitchellcash/bitcoin,qtumproject/qtum,jonasschnelli/bitcoin,bitcoin/bitcoin,prusnak/bitcoin,rnicoll/bitcoin,jlopp/statoshi,lateminer/bitcoin,ajtowns/bitcoin,rnicoll/bitcoin,mitchellcash/bitcoin,achow101/bitcoin,ahmedbodi/vertcoin,EthanHeilman/bitcoin,MeshCollider/bitcoin,fujicoin/fujicoin,JeremyRubin/bitcoin,bitcoin/bitcoin,monacoinproject/monacoin,wellenreiter01/Feathercoin,EthanHeilman/bitcoin,Sjors/bitcoin,particl/particl-core,gjhiggins/vcoincore,instagibbs/bitcoin,apoelstra/bitcoin,mruddy/bitcoin,achow101/bitcoin,domob1812/namecore,jonasschnelli/bitcoin,rnicoll/bitcoin,n1bor/bitcoin,GroestlCoin/bitcoin,instagibbs/bitcoin,practicalswift/bitcoin,Xekyo/bitcoin,AkioNak/bitcoin,fujicoin/fujicoin,GroestlCoin/bitcoin,jonasschnelli/bitcoin,domob1812/namecore,lateminer/bitcoin,wellenreiter01/Feathercoin,AkioNak/bitcoin,vertcoin/vertcoin,DigitalPandacoin/pandacoin,namecoin/namecore,MarcoFalke/bitcoin,tecnovert/particl-core,rnicoll/bitcoin,anditto/bitcoin,andreaskern/bitcoin,domob1812/bitcoin,bitcoinknots/bitcoin,kallewoof/bitcoin,DigitalPandacoin/pandacoin,particl/particl-core,anditto/bitcoin,Xekyo/bitcoin,qtumproject/qtum,prusnak/bitcoin,ElementsProject/elements,ElementsProject/elements,jambolo/bitcoin,jambolo/bitcoin,qtumproject/qtum,tjps/bitcoin,fanquake/bitcoin,jlopp/statoshi,midnightmagic/bitcoin,MarcoFalke/bitcoin,jambolo/bitcoin,mm-s/bitcoin,rnicoll/dogecoin,jlopp/statoshi,practicalswift/bitcoin,kallewoof/bitcoin,gjhiggins/vcoincore,peercoin/peercoin,fujicoin/fujicoin,vertcoin/vertcoin,mm-s/bitcoin,apoelstra/bitcoin,apoelstra/bitcoin,yenliangl/bitcoin,gjhiggins/vcoincore,DigitalPandacoin/pandacoin,andreaskern/bitcoin,ahmedbodi/vertcoin,lateminer/bitcoin,namecoin/namecoin-core,fujicoin/fujicoin,qtumproject/qtum,JeremyRubin/bitcoin,cdecker/bitcoin,fanquake/bitcoin,jlopp/statoshi