Set `Chef::Config[:client_key]` to nil (closes #237)
Set `Chef::Config[:client_key]` to nil (closes #237)

mcoolive/chefspec,chefspec/chefspec,shanethehat/chefspec,jkeiser/chefspec,rsr5/chefspec,jtimberman/chefspec,ranjib/chefspec,gsavage/chefspec,oldirty/chefspec,h4ck3rm1k3/chefspec,Thalagyrt/chefspec,oldirty/chefspec,Thalagyrt/chefspec,aspiers/chefspec,coderanger/chefspec,mcoolive/chefspec,chefspec/chefspec,lamont-granquist/chefspec,aspiers/chefspec,bheuvel/chefspec,bheuvel/chefspec,rsr5/chefspec,375gnu/chefspec,zuazo-forks/chefspec,sethvargo/chefspec,375gnu/chefspec,ranjib/chefspec,gsavage/chefspec,jtimberman/chefspec,h4ck3rm1k3/chefspec,coderanger/chefspec,sethvargo/chefspec,lamont-granquist/chefspec,shanethehat/chefspec,jkeiser/chefspec