use correct Gemfile in `bin/setup` test
use correct Gemfile in `bin/setup` test

Currently, `bin/setup` test uses Gemfile of Rails. But this Gemfile is not a
file to be used in Rails application.
Add a Gemfile to Rails application that is created for test, it has been
modified to use the Gemfile.

EmmaB/rails-1,richseviora/rails,kachick/rails,travisofthenorth/rails,lucasmazza/rails,tijwelch/rails,georgeclaghorn/rails,yasslab/railsguides.jp,mohitnatoo/rails,illacceptanything/illacceptanything,Erol/rails,gfvcastro/rails,brchristian/rails,richseviora/rails,xlymian/rails,Erol/rails,koic/rails,bolek/rails,kenta-s/rails,riseshia/railsguides.kr,arjes/rails,yhirano55/rails,arunagw/rails,yasslab/railsguides.jp,pschambacher/rails,shioyama/rails,lcreid/rails,alecspopa/rails,Edouard-chin/rails,gcourtemanche/rails,kddeisz/rails,kachick/rails,rails/rails,odedniv/rails,illacceptanything/illacceptanything,utilum/rails,shioyama/rails,mijoharas/rails,notapatch/rails,georgeclaghorn/rails,felipecvo/rails,illacceptanything/illacceptanything,flanger001/rails,prathamesh-sonpatki/rails,lucasmazza/rails,esparta/rails,repinel/rails,repinel/rails,georgeclaghorn/rails,elfassy/rails,rails/rails,pvalena/rails,lucasmazza/rails,iainbeeston/rails,illacceptanything/illacceptanything,illacceptanything/illacceptanything,baerjam/rails,kenta-s/rails,felipecvo/rails,illacceptanything/illacceptanything,voray/rails,rbhitchcock/rails,untidy-hair/rails,flanger001/rails,palkan/rails,gavingmiller/rails,bogdanvlviv/rails,assain/rails,samphilipd/rails,joonyou/rails,hanystudy/rails,aditya-kapoor/rails,rafaelfranca/omg-rails,mathieujobin/reduced-rails-for-travis,untidy-hair/rails,Erol/rails,pvalena/rails,bradleypriest/rails,brchristian/rails,kirs/rails-1,sergey-alekseev/rails,tgxworld/rails,fabianoleittes/rails,Spin42/rails,repinel/rails,yalab/rails,mechanicles/rails,Erol/rails,hanystudy/rails,xlymian/rails,palkan/rails,marklocklear/rails,pschambacher/rails,tijwelch/rails,odedniv/rails,xlymian/rails,Stellenticket/rails,printercu/rails,alecspopa/rails,Sen-Zhang/rails,joonyou/rails,maicher/rails,yahonda/rails,Vasfed/rails,prathamesh-sonpatki/rails,riseshia/railsguides.kr,rossta/rails,samphilipd/rails,kamipo/rails,MichaelSp/rails,mechanicles/rails,notapatch/rails,illacceptanything/illacceptanything,mijoharas/rails,mtsmfm/rails,marklocklear/rails,EmmaB/rails-1,MSP-Greg/rails,stefanmb/rails,travisofthenorth/rails,betesh/rails,BlakeWilliams/rails,betesh/rails,Stellenticket/rails,fabianoleittes/rails,bolek/rails,aditya-kapoor/rails,eileencodes/rails,kmcphillips/rails,starknx/rails,brchristian/rails,vipulnsward/rails,assain/rails,gavingmiller/rails,maicher/rails,mtsmfm/railstest,flanger001/rails,yalab/rails,kaspth/rails,MSP-Greg/rails,gcourtemanche/rails,ttanimichi/rails,prathamesh-sonpatki/rails,baerjam/rails,flanger001/rails,vipulnsward/rails,kddeisz/rails,BlakeWilliams/rails,lcreid/rails,yawboakye/rails,kddeisz/rails,elfassy/rails,joonyou/rails,lcreid/rails,fabianoleittes/rails,mijoharas/rails,Spin42/rails,palkan/rails,mohitnatoo/rails,Envek/rails,mechanicles/rails,arunagw/rails,starknx/rails,Envek/rails,sealocal/rails,yahonda/rails,Vasfed/rails,assain/rails,gfvcastro/rails,odedniv/rails,gavingmiller/rails,bogdanvlviv/rails,eileencodes/rails,utilum/rails,notapatch/rails,yawboakye/rails,deraru/rails,iainbeeston/rails,rossta/rails,bogdanvlviv/rails,starknx/rails,travisofthenorth/rails,stefanmb/rails,riseshia/railsguides.kr,kamipo/rails,matrinox/rails,jeremy/rails,pvalena/rails,yhirano55/rails,arunagw/rails,illacceptanything/illacceptanything,Edouard-chin/rails,shioyama/rails,Edouard-chin/rails,deraru/rails,yawboakye/rails,gauravtiwari/rails,untidy-hair/rails,schuetzm/rails,kirs/rails-1,jeremy/rails,coreyward/rails,ledestin/rails,MichaelSp/rails,mohitnatoo/rails,esparta/rails,untidy-hair/rails,kenta-s/rails,kmayer/rails,Edouard-chin/rails,kmcphillips/rails,voray/rails,kddeisz/rails,schuetzm/rails,gfvcastro/rails,mtsmfm/rails,shioyama/rails,ledestin/rails,MichaelSp/rails,illacceptanything/illacceptanything,BlakeWilliams/rails,ngpestelos/rails,kmayer/rails,kachick/rails,pschambacher/rails,alecspopa/rails,coreyward/rails,gauravtiwari/rails,vipulnsward/rails,arjes/rails,betesh/rails,iainbeeston/rails,printercu/rails,arunagw/rails,mathieujobin/reduced-rails-for-travis,rails/rails,illacceptanything/illacceptanything,rossta/rails,eileencodes/rails,sergey-alekseev/rails,deraru/rails,yhirano55/rails,mtsmfm/rails,koic/rails,felipecvo/rails,utilum/rails,illacceptanything/illacceptanything,tjschuck/rails,hanystudy/rails,schuetzm/rails,bogdanvlviv/rails,kmayer/rails,matrinox/rails,elfassy/rails,eileencodes/rails,iainbeeston/rails,yahonda/rails,esparta/rails,deraru/rails,EmmaB/rails-1,bradleypriest/rails,mohitnatoo/rails,joonyou/rails,kirs/rails-1,pvalena/rails,vipulnsward/rails,travisofthenorth/rails,MSP-Greg/rails,bolek/rails,yhirano55/rails,maicher/rails,baerjam/rails,arjes/rails,kamipo/rails,Vasfed/rails,Stellenticket/rails,Stellenticket/rails,BlakeWilliams/rails,illacceptanything/illacceptanything,rbhitchcock/rails,Envek/rails,Vasfed/rails,illacceptanything/illacceptanything,richseviora/rails,coreyward/rails,tjschuck/rails,MSP-Greg/rails,gcourtemanche/rails,lcreid/rails,illacceptanything/illacceptanything,marklocklear/rails,matrinox/rails,kaspth/rails,gfvcastro/rails,tjschuck/rails,kmcphillips/rails,utilum/rails,rafaelfranca/omg-rails,ttanimichi/rails,rails/rails,esparta/rails,assain/rails,gauravtiwari/rails,yawboakye/rails,Sen-Zhang/rails,mechanicles/rails,aditya-kapoor/rails,illacceptanything/illacceptanything,Spin42/rails,yalab/rails,printercu/rails,baerjam/rails,ttanimichi/rails,ngpestelos/rails,jeremy/rails,ngpestelos/rails,mtsmfm/railstest,koic/rails,tijwelch/rails,kmcphillips/rails,palkan/rails,betesh/rails,voray/rails,samphilipd/rails,yasslab/railsguides.jp,bradleypriest/rails,jeremy/rails,sergey-alekseev/rails,yasslab/railsguides.jp,Sen-Zhang/rails,yalab/rails,mtsmfm/railstest,tjschuck/rails,Envek/rails,notapatch/rails,riseshia/railsguides.kr,georgeclaghorn/rails,rafaelfranca/omg-rails,tgxworld/rails,stefanmb/rails,tgxworld/rails,repinel/rails,mathieujobin/reduced-rails-for-travis,sealocal/rails,kaspth/rails,aditya-kapoor/rails,yahonda/rails,rbhitchcock/rails,schuetzm/rails,sealocal/rails,ledestin/rails,tgxworld/rails,fabianoleittes/rails,prathamesh-sonpatki/rails,printercu/rails