rename test method to avoid overriding
rename test method to avoid overriding

This removes the following warning.

```
./test/dispatch/routing_test.rb:3696: warning: method redefined; discarding old test_namespaced_roots
./test/dispatch/routing_test.rb:1632: warning: previous definition of test_namespaced_roots was here
```

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