remove unused indirection for ftp proxy config
remove unused indirection for ftp proxy config

the FTP backend is only used when uri.scheme == "ftp", so there is no
need to add extra indirection around looking up config settings for ftp
proxying. Remove indirection in favor of explicitness and simplicity.

malisettirammurthy/chef,cachamber/chef,zshuo/chef,ccope/chef,Igorshp/chef,ekometti/chef,someara/chef,oclaussen/chef,tomdoherty/chef,joemiller/chef,karthikrev/chef,clintoncwolfe/chef,smurawski/chef,DeWaRs1206/chef,evan2645/chef,patcon/chef,h4ck3rm1k3/chef,joemiller/chef,mio-g/chef,jimmymccrory/chef,martinisoft/chef,gene1wood/chef,martinb3/chef,sempervictus/chef,Tensibai/chef,pburkholder/chef,kaznishi/chef,patcon/chef,jkerry/chef,MsysTechnologiesllc/chef,kaznishi/chef,sekrett/chef,mikefaille/chef,oclaussen/chef,3dinfluence/chef,brettcave/chef,cachamber/chef,tomdoherty/chef,nellshamrell/chef,Kast0rTr0y/chef,erkolson/chef,youngjl1/chef,Tensibai/chef,baberthal/chef,permyakovsv/chef,zshuo/chef,jimmymccrory/chef,josb/chef,jaymzh/chef,askl56/chef,nalingarg2/chef-1,ekometti/chef,bahamas10/chef,AndyBoucher/Chef-Testing,faspl/chef,AndyBoucher/Chef-Testing,tbriggs-curse/chef,cmluciano/chef,ckaushik/chef,mikedodge04/chef,antonifs/chef,cachamber/chef,BackSlasher/chef,pburkholder/chef,someara/chef,mal/chef,swalberg/chef,bahamas10/chef,cmluciano/chef,jmhardison/chef,kaznishi/chef,jkerry/chef,webframp/chef,swalberg/chef,nellshamrell/chef,Kast0rTr0y/chef,tbunnyman/chef,jkerry/chef,criteo-forks/chef,cachamber/chef,nalingarg2/chef-1,Tensibai/chef,natewalck/chef,nicklv/chef,erkolson/chef,josb/chef,mwrock/chef,coderanger/chef,ccope/chef,cachamber/chef,circleback/chef,joemiller/chef,EasonYi/chef,jkerry/chef,jblaine/chef,swalberg/chef,tbunnyman/chef,ranjib/chef,tomdoherty/chef,BackSlasher/chef,jonlives/chef,aaron-lane/chef,robmul/chef,docwhat/chef,faspl/chef,sanditiffin/chef,webframp/chef,ckaushik/chef,h4ck3rm1k3/chef,malisettirammurthy/chef,h4ck3rm1k3/chef,acaiafa/chef,ckaushik/chef,cgvarela/chef,pburkholder/chef,evan2645/chef,someara/chef,jmhardison/chef,gene1wood/chef,ducthanh/chef,lamont-granquist/chef,sekrett/chef,ChaosCloud/chef,jk47/chef,sysbot/chef,juliandunn/chef,nalingarg2/chef-1,zuazo-forks/chef,EasonYi/chef,josb/chef,tbriggs-curse/chef,gene1wood/chef,nsdavidson/chef,legal90/chef,pburkholder/chef,paulmooring/chef,mio-g/chef,jblaine/chef,oclaussen/chef,sekrett/chef,sanditiffin/chef,baberthal/chef,AndyBoucher/Chef-Testing,custora/chef,jmhardison/chef,cgvarela/chef,strangelittlemonkey/chef,robmul/chef,jonlives/chef,grubernaut/chef,skmichaelson/chef,MsysTechnologiesllc/chef,ekometti/chef,jk47/chef,sysbot/chef,andrewpsp/chef,ChaosCloud/chef,smurawski/chef,circleback/chef,h4ck3rm1k3/chef,circleback/chef,OpSitters/chef,martinisoft/chef,mio-g/chef,martinb3/chef,nicklv/chef,tbunnyman/chef,lamont-granquist/chef,patcon/chef,skmichaelson/chef,polamjag/chef,evan2645/chef,gsaslis/chef,mikedodge04/chef,sideci-sample/sideci-sample-chef,ChaosCloud/chef,nvwls/chef,nsdavidson/chef,tas50/chef-1,custora/chef,DeWaRs1206/chef,nsdavidson/chef,brettcave/chef,erkolson/chef,sempervictus/chef,youngjl1/chef,sometimesfood/chef,mikefaille/chef,nsdavidson/chef,evan2645/chef,jordane/chef,Ppjet6/chef,mikedodge04/chef,ducthanh/chef,Tensibai/chef,custora/chef,b002368/chef-repo,Kast0rTr0y/chef,aaron-lane/chef,b002368/chef-repo,jimmymccrory/chef,askl56/chef,h4ck3rm1k3/chef,martinisoft/chef,nalingarg2/chef-1,jaymzh/chef,robmul/chef,mattray/chef,danielsdeleo/seth,robmul/chef,jk47/chef,brettcave/chef,jkerry/chef,zshuo/chef,karthikrev/chef,jimmymccrory/chef,adamleff/chef,strangelittlemonkey/chef,juliandunn/chef,antonifs/chef,askl56/chef,zshuo/chef,mattray/chef,mattray/chef,skmichaelson/chef,circleback/chef,baberthal/chef,ccope/chef,mwrock/chef,zuazo-forks/chef,ccsplit/chef,tbriggs-curse/chef,chef/chef,sempervictus/chef,natewalck/chef,jmhardison/chef,DeWaRs1206/chef,evan2645/chef,nicklv/chef,zshuo/chef,adamleff/chef,DeWaRs1206/chef,brettcave/chef,jkerry/chef,faspl/chef,Ppjet6/chef,zuazo-forks/chef,mio-g/chef,ckaushik/chef,EasonYi/chef,Ppjet6/chef,sekrett/chef,ktpan/chef-play,MichaelPereira/chef,onlyhavecans/chef,bahamas10/chef,faspl/chef,circleback/chef,askl56/chef,Igorshp/chef,AndyBoucher/Chef-Testing,ccsplit/chef,jonlives/chef,tas50/chef-1,ranjib/chef,natewalck/chef,nathwill/chef,mattray/chef,sometimesfood/chef,legal90/chef,custora/chef,ccsplit/chef,Ppjet6/chef,karthikrev/chef,pburkholder/chef,MsysTechnologiesllc/chef,onlyhavecans/chef,OpSitters/chef,acaiafa/chef,kaznishi/chef,permyakovsv/chef,aaron-lane/chef,jmhardison/chef,jagdeesh109/chef,jordane/chef,robmul/chef,sideci-sample/sideci-sample-chef,cgvarela/chef,jmhardison/chef,sysbot/chef,natewalck/chef,erkolson/chef,permyakovsv/chef,h4ck3rm1k3/chef,ktpan/chef-play,webframp/chef,gsaslis/chef,swalberg/chef,Tensibai/chef,askl56/chef,Kast0rTr0y/chef,baberthal/chef,natewalck/chef,chef/chef,ducthanh/chef,antonifs/chef,robmul/chef,BackSlasher/chef,antonifs/chef,clintoncwolfe/chef,jblaine/chef,strangelittlemonkey/chef,renanvicente/chef,nvwls/chef,chef/chef,nvwls/chef,coderanger/chef,youngjl1/chef,karthikrev/chef,cmluciano/chef,Igorshp/chef,coderanger/chef,sempervictus/chef,custora/chef,oclaussen/chef,BackSlasher/chef,smurawski/chef,adamleff/chef,smurawski/chef,MichaelPereira/chef,mio-g/chef,ktpan/chef-play,chef/chef,docwhat/chef,mikedodge04/chef,zuazo-forks/chef,higanworks/chef,higanworks/chef,sanditiffin/chef,clintoncwolfe/chef,docwhat/chef,DeWaRs1206/chef,nguyen-tien-mulodo/chef,jordane/chef,ktpan/chef-play,EasonYi/chef,danielsdeleo/seth,sanditiffin/chef,ducthanh/chef,nguyen-tien-mulodo/chef,sanditiffin/chef,clintoncwolfe/chef,bahamas10/chef,acaiafa/chef,ChaosCloud/chef,ccsplit/chef,permyakovsv/chef,andrewpsp/chef,jagdeesh109/chef,patcon/chef,sekrett/chef,cgvarela/chef,jordane/chef,paulmooring/chef,lamont-granquist/chef,OpSitters/chef,martinisoft/chef,strangelittlemonkey/chef,higanworks/chef,andrewpsp/chef,adamleff/chef,nsdavidson/chef,nicklv/chef,grubernaut/chef,coderanger/chef,docwhat/chef,someara/chef,grubernaut/chef,martinb3/chef,nathwill/chef,criteo-forks/chef,jonlives/chef,sempervictus/chef,faspl/chef,zshuo/chef,ckaushik/chef,grubernaut/chef,legal90/chef,jblaine/chef,MichaelPereira/chef,nathwill/chef,mal/chef,AndyBoucher/Chef-Testing,ducthanh/chef,tas50/chef-1,juliandunn/chef,cgvarela/chef,malisettirammurthy/chef,AndyBoucher/Chef-Testing,3dinfluence/chef,nicklv/chef,clintoncwolfe/chef,jonlives/chef,nguyen-tien-mulodo/chef,polamjag/chef,joemiller/chef,legal90/chef,natewalck/chef,youngjl1/chef,nguyen-tien-mulodo/chef,criteo-forks/chef,someara/chef,strangelittlemonkey/chef,EasonYi/chef,ChaosCloud/chef,sideci-sample/sideci-sample-chef,mal/chef,danielsdeleo/seth,BackSlasher/chef,juliandunn/chef,sempervictus/chef,ducthanh/chef,martinb3/chef,jblaine/chef,jagdeesh109/chef,Igorshp/chef,sometimesfood/chef,sometimesfood/chef,renanvicente/chef,mal/chef,cgvarela/chef,Igorshp/chef,onlyhavecans/chef,legal90/chef,ranjib/chef,renanvicente/chef,mikefaille/chef,adamleff/chef,juliandunn/chef,andrewpsp/chef,someara/chef,gsaslis/chef,bahamas10/chef,3dinfluence/chef,mattray/chef,grubernaut/chef,acaiafa/chef,MichaelPereira/chef,jk47/chef,sysbot/chef,mal/chef,MichaelPereira/chef,oclaussen/chef,tbunnyman/chef,tbunnyman/chef,EasonYi/chef,sideci-sample/sideci-sample-chef,nalingarg2/chef-1,kaznishi/chef,karthikrev/chef,permyakovsv/chef,sekrett/chef,ranjib/chef,ccsplit/chef,nguyen-tien-mulodo/chef,mikefaille/chef,joemiller/chef,danielsdeleo/seth,gsaslis/chef,OpSitters/chef,brettcave/chef,polamjag/chef,webframp/chef,faspl/chef,MsysTechnologiesllc/chef,3dinfluence/chef,cmluciano/chef,grubernaut/chef,danielsdeleo/seth,aaron-lane/chef,aaron-lane/chef,nvwls/chef,baberthal/chef,b002368/chef-repo,ckaushik/chef,malisettirammurthy/chef,b002368/chef-repo,onlyhavecans/chef,mal/chef,nvwls/chef,adamleff/chef,nellshamrell/chef,patcon/chef,tbriggs-curse/chef,nvwls/chef,lamont-granquist/chef,webframp/chef,nathwill/chef,ChaosCloud/chef,martinisoft/chef,jimmymccrory/chef,BackSlasher/chef,jimmymccrory/chef,permyakovsv/chef,ccsplit/chef,zuazo-forks/chef,gene1wood/chef,criteo-forks/chef,ranjib/chef,MichaelPereira/chef,malisettirammurthy/chef,nathwill/chef,nguyen-tien-mulodo/chef,erkolson/chef,jagdeesh109/chef,3dinfluence/chef,onlyhavecans/chef,ekometti/chef,docwhat/chef,ktpan/chef-play,ccope/chef,jonlives/chef,nicklv/chef,mikefaille/chef,skmichaelson/chef,sanditiffin/chef,nellshamrell/chef,joemiller/chef,jaymzh/chef,youngjl1/chef,skmichaelson/chef,b002368/chef-repo,DeWaRs1206/chef,mwrock/chef,OpSitters/chef,bahamas10/chef,malisettirammurthy/chef,legal90/chef,ranjib/chef,acaiafa/chef,zuazo-forks/chef,OpSitters/chef,skmichaelson/chef,josb/chef,karthikrev/chef,polamjag/chef,strangelittlemonkey/chef,cachamber/chef,martinb3/chef,acaiafa/chef,Igorshp/chef,kaznishi/chef,tas50/chef-1,Ppjet6/chef,smurawski/chef,tomdoherty/chef,mikedodge04/chef,docwhat/chef,antonifs/chef,sometimesfood/chef,mikedodge04/chef,ccope/chef,evan2645/chef,tbriggs-curse/chef,criteo-forks/chef,patcon/chef,ekometti/chef,mwrock/chef,tbunnyman/chef,Ppjet6/chef,jaymzh/chef,3dinfluence/chef,lamont-granquist/chef,sometimesfood/chef,jk47/chef,polamjag/chef,tomdoherty/chef,higanworks/chef,sideci-sample/sideci-sample-chef,nathwill/chef,paulmooring/chef,onlyhavecans/chef,gsaslis/chef,mio-g/chef,youngjl1/chef,askl56/chef,custora/chef,aaron-lane/chef,sysbot/chef,antonifs/chef,paulmooring/chef,baberthal/chef,jagdeesh109/chef,martinb3/chef,b002368/chef-repo,higanworks/chef,renanvicente/chef,polamjag/chef,jordane/chef,nalingarg2/chef-1,paulmooring/chef,gsaslis/chef,nsdavidson/chef,smurawski/chef,josb/chef,erkolson/chef,Kast0rTr0y/chef,swalberg/chef,circleback/chef,jagdeesh109/chef,brettcave/chef,jk47/chef,criteo-forks/chef,ekometti/chef,nellshamrell/chef,tbriggs-curse/chef,swalberg/chef,oclaussen/chef,clintoncwolfe/chef,mikefaille/chef,josb/chef,nellshamrell/chef,andrewpsp/chef,renanvicente/chef,webframp/chef,pburkholder/chef,cmluciano/chef,ktpan/chef-play,lamont-granquist/chef,Kast0rTr0y/chef,renanvicente/chef,jblaine/chef,andrewpsp/chef,paulmooring/chef