[CHEF-3689] Retry all 5xx when registering
[CHEF-3689] Retry all 5xx when registering

Also, document that retries are layered, and explain purpose.

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