Fix digest ETAG test.
Fix digest ETAG test.

After
https://github.com/rack/rack/commit/12528d4567d8e6c1c7e9422fee6cd8b43c4389bf
ETag will include a `W/` before the digest.

bolek/rails,schuetzm/rails,kirs/rails-1,utilum/rails,georgeclaghorn/rails,fabianoleittes/rails,xlymian/rails,Erol/rails,coreyward/rails,starknx/rails,lcreid/rails,bolek/rails,joonyou/rails,richseviora/rails,kirs/rails-1,odedniv/rails,elfassy/rails,rbhitchcock/rails,travisofthenorth/rails,arunagw/rails,betesh/rails,rossta/rails,shioyama/rails,Stellenticket/rails,betesh/rails,printercu/rails,MichaelSp/rails,mathieujobin/reduced-rails-for-travis,fabianoleittes/rails,tjschuck/rails,odedniv/rails,kachick/rails,mohitnatoo/rails,MSP-Greg/rails,arjes/rails,mohitnatoo/rails,felipecvo/rails,lcreid/rails,illacceptanything/illacceptanything,Spin42/rails,deraru/rails,rails/rails,Envek/rails,kmayer/rails,deraru/rails,ttanimichi/rails,MSP-Greg/rails,yawboakye/rails,shioyama/rails,iainbeeston/rails,aditya-kapoor/rails,yahonda/rails,Envek/rails,maicher/rails,Stellenticket/rails,kddeisz/rails,pvalena/rails,kenta-s/rails,samphilipd/rails,illacceptanything/illacceptanything,gavingmiller/rails,88rabbit/newRails,rbhitchcock/rails,MichaelSp/rails,sergey-alekseev/rails,rafaelfranca/omg-rails,Spin42/rails,riseshia/railsguides.kr,esparta/rails,kmcphillips/rails,vipulnsward/rails,amoody2108/TechForJustice,fabianoleittes/rails,yhirano55/rails,rafaelfranca/omg-rails,vassilevsky/rails,pvalena/rails,Edouard-chin/rails,georgeclaghorn/rails,palkan/rails,voray/rails,illacceptanything/illacceptanything,BlakeWilliams/rails,betesh/rails,Erol/rails,amoody2108/TechForJustice,Erol/rails,amoody2108/TechForJustice,coreyward/rails,notapatch/rails,BlakeWilliams/rails,yhirano55/rails,Stellenticket/rails,pschambacher/rails,pvalena/rails,maicher/rails,untidy-hair/rails,esparta/rails,kmayer/rails,rails/rails,kmcphillips/rails,untidy-hair/rails,kenta-s/rails,jeremy/rails,Edouard-chin/rails,yalab/rails,starknx/rails,yasslab/railsguides.jp,gauravtiwari/rails,riseshia/railsguides.kr,flanger001/rails,riseshia/railsguides.kr,shioyama/rails,gavingmiller/rails,EmmaB/rails-1,schuetzm/rails,yasslab/railsguides.jp,kachick/rails,baerjam/rails,assain/rails,pschambacher/rails,hanystudy/rails,bradleypriest/rails,matrinox/rails,MSP-Greg/rails,travisofthenorth/rails,tjschuck/rails,vassilevsky/rails,tgxworld/rails,yawboakye/rails,kachick/rails,baerjam/rails,yawboakye/rails,starknx/rails,Vasfed/rails,marklocklear/rails,joonyou/rails,yawboakye/rails,arjes/rails,printercu/rails,prathamesh-sonpatki/rails,kaspth/rails,alecspopa/rails,ledestin/rails,kddeisz/rails,richseviora/rails,Vasfed/rails,arunagw/rails,sergey-alekseev/rails,EmmaB/rails-1,sealocal/rails,gauravtiwari/rails,lcreid/rails,ledestin/rails,MichaelSp/rails,elfassy/rails,88rabbit/newRails,aditya-kapoor/rails,mijoharas/rails,kmcphillips/rails,stefanmb/rails,mechanicles/rails,illacceptanything/illacceptanything,samphilipd/rails,gfvcastro/rails,deraru/rails,mohitnatoo/rails,odedniv/rails,travisofthenorth/rails,iainbeeston/rails,pschambacher/rails,rossta/rails,palkan/rails,schuetzm/rails,illacceptanything/illacceptanything,matrinox/rails,sergey-alekseev/rails,bogdanvlviv/rails,kddeisz/rails,untidy-hair/rails,yalab/rails,matrinox/rails,aditya-kapoor/rails,arjes/rails,prathamesh-sonpatki/rails,shioyama/rails,eileencodes/rails,utilum/rails,gfvcastro/rails,bogdanvlviv/rails,elfassy/rails,repinel/rails,mohitnatoo/rails,repinel/rails,hanystudy/rails,alecspopa/rails,palkan/rails,mtsmfm/railstest,tgxworld/rails,mechanicles/rails,mtsmfm/rails,rossta/rails,iainbeeston/rails,Spin42/rails,yalab/rails,Sen-Zhang/rails,notapatch/rails,voray/rails,utilum/rails,iainbeeston/rails,yahonda/rails,koic/rails,gcourtemanche/rails,jeremy/rails,riseshia/railsguides.kr,illacceptanything/illacceptanything,brchristian/rails,vipulnsward/rails,Erol/rails,voray/rails,rafaelfranca/omg-rails,tgxworld/rails,tijwelch/rails,kamipo/rails,untidy-hair/rails,bradleypriest/rails,brchristian/rails,coreyward/rails,tijwelch/rails,printercu/rails,travisofthenorth/rails,hanystudy/rails,vipulnsward/rails,schuetzm/rails,mechanicles/rails,ttanimichi/rails,yalab/rails,yasslab/railsguides.jp,georgeclaghorn/rails,fabianoleittes/rails,flanger001/rails,Edouard-chin/rails,gcourtemanche/rails,kenta-s/rails,EmmaB/rails-1,gauravtiwari/rails,illacceptanything/illacceptanything,mathieujobin/reduced-rails-for-travis,felipecvo/rails,stefanmb/rails,gavingmiller/rails,utilum/rails,assain/rails,lucasmazza/rails,esparta/rails,aditya-kapoor/rails,lcreid/rails,esparta/rails,eileencodes/rails,printercu/rails,felipecvo/rails,bolek/rails,illacceptanything/illacceptanything,bogdanvlviv/rails,yhirano55/rails,illacceptanything/illacceptanything,illacceptanything/illacceptanything,Stellenticket/rails,palkan/rails,illacceptanything/illacceptanything,repinel/rails,jeremy/rails,Envek/rails,ngpestelos/rails,baerjam/rails,MSP-Greg/rails,kamipo/rails,georgeclaghorn/rails,lucasmazza/rails,illacceptanything/illacceptanything,88rabbit/newRails,prathamesh-sonpatki/rails,xlymian/rails,arunagw/rails,kmcphillips/rails,illacceptanything/illacceptanything,ngpestelos/rails,betesh/rails,yasslab/railsguides.jp,lucasmazza/rails,joonyou/rails,yahonda/rails,mijoharas/rails,Vasfed/rails,mijoharas/rails,mtsmfm/railstest,rails/rails,gfvcastro/rails,jeremy/rails,tjschuck/rails,flanger001/rails,assain/rails,richseviora/rails,arunagw/rails,xlymian/rails,flanger001/rails,Sen-Zhang/rails,alecspopa/rails,kmayer/rails,pvalena/rails,samphilipd/rails,kirs/rails-1,maicher/rails,notapatch/rails,notapatch/rails,gcourtemanche/rails,tjschuck/rails,baerjam/rails,tijwelch/rails,koic/rails,BlakeWilliams/rails,assain/rails,eileencodes/rails,sealocal/rails,tgxworld/rails,rails/rails,kaspth/rails,ttanimichi/rails,Envek/rails,sealocal/rails,kaspth/rails,vipulnsward/rails,rbhitchcock/rails,eileencodes/rails,kddeisz/rails,marklocklear/rails,ngpestelos/rails,mechanicles/rails,illacceptanything/illacceptanything,repinel/rails,brchristian/rails,mtsmfm/rails,yahonda/rails,gfvcastro/rails,Sen-Zhang/rails,vassilevsky/rails,mathieujobin/reduced-rails-for-travis,ledestin/rails,yhirano55/rails,deraru/rails,kamipo/rails,Vasfed/rails,stefanmb/rails,joonyou/rails,mtsmfm/railstest,illacceptanything/illacceptanything,marklocklear/rails,mtsmfm/rails,Edouard-chin/rails,bogdanvlviv/rails,koic/rails,prathamesh-sonpatki/rails,BlakeWilliams/rails,bradleypriest/rails