Converted plugins/freebsd/cpu to Mixlib::ShellOut.
Converted plugins/freebsd/cpu to Mixlib::ShellOut.

cmluciano/ohai,Fodoj/ohai,davide125/ohai,glennmatthews/ohai,criteo-forks/ohai,juliandunn/ohai,juliandunn/ohai,mattray/ohai,shtzr840329/ohai,btm/ohai,bougyman/ohai,glennmatthews/ohai,Fodoj/ohai,sh9189/ohai,zshuo/ohai,jseely/ohai,tas50/ohai-1,http-418/ohai,higanworks/ohai,bougyman/ohai,broadinstitute/ohai,dreamnite/ohai,btm/ohai,375gnu/ohai,criteo-forks/ohai,numericillustration/ohai,MSOpenTech/ohai,phreakocious/ohai,n-marton/ohai,mattray/ohai,cmluciano/ohai,jseely/ohai,numericillustration/ohai,adamleff/ohai,zshuo/ohai,chef/ohai,jaymzh/ohai,jaymzh/ohai,acaiafa/ohai,Juniper/ohai,chef/ohai,nathwill/ohai,tas50/ohai-1,shtzr840329/ohai,sh9189/ohai,n-marton/ohai,higanworks/ohai,375gnu/ohai,jbfavre/ohai,acaiafa/ohai,Juniper/ohai,davide125/ohai,johnbellone/ohai,dreamnite/ohai,adamleff/ohai,johnbellone/ohai,http-418/ohai,broadinstitute/ohai,phreakocious/ohai,nathwill/ohai,jbfavre/ohai,MSOpenTech/ohai