Add an integration test of chef-client with empty ENV.
Add an integration test of chef-client with empty ENV.

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