Fix spec failure based on previous merge
Fix spec failure based on previous merge

I missed a small thing during my last merge, wherein the payload
no longer needs to be double-json'ified.  This commit fixes it
and gets the specs passing again.

rbrw/puppetdb,highb/puppetdb,johnduarte/puppetdb,highb/puppetdb,mullr/puppetdb,melissa/puppetdb,puppetlabs/puppetdb,shrug/puppetdb,grimradical/puppetdb,ajroetker/puppetdb,mullr/puppetdb,rbrw/puppetdb,jantman/puppetdb,johnduarte/puppetdb,kbrezina/puppetdb,kbrezina/puppetdb,ajroetker/puppetdb,cprice404/puppetdb,senior/puppetdb,puppetlabs/puppetdb,wkalt/puppetdb,shrug/puppetdb,nfagerlund/puppetdb,nfagerlund/puppetdb,cprice404/puppetdb,grimradical/puppetdb,rbrw/puppetdb,melissa/puppetdb,senior/puppetdb,highb/puppetdb,wkalt/puppetdb,senior/puppetdb,rbrw/puppetdb,puppetlabs/puppetdb,waynr/puppetdb,ajroetker/puppetdb,rbrw/puppetdb,mullr/puppetdb,senior/puppetdb,kbarber/puppetdb,waynr/puppetdb,puppetlabs/puppetdb,wkalt/puppetdb,grimradical/puppetdb,melissa/puppetdb,github/puppetlabs-puppetdb,kbrezina/puppetdb,cprice404/puppetdb,nfagerlund/puppetdb,highb/puppetdb,johnduarte/puppetdb,jantman/puppetdb,shrug/puppetdb,github/puppetlabs-puppetdb,waynr/puppetdb,kbarber/puppetdb,shrug/puppetdb,johnduarte/puppetdb,kbrezina/puppetdb,grimradical/puppetdb,jantman/puppetdb,mullr/puppetdb,ajroetker/puppetdb,wkalt/puppetdb,kbarber/puppetdb,waynr/puppetdb,mullr/puppetdb,puppetlabs/puppetdb,kbarber/puppetdb,github/puppetlabs-puppetdb