Add the new "yum clean" command we expect.
Add the new "yum clean" command we expect.

adamtheturtle/flocker,achanda/flocker,LaynePeng/flocker,hackday-profilers/flocker,Azulinho/flocker,LaynePeng/flocker,agonzalezro/flocker,lukemarsden/flocker,achanda/flocker,wallnerryan/flocker-profiles,hackday-profilers/flocker,agonzalezro/flocker,AndyHuu/flocker,mbrukman/flocker,AndyHuu/flocker,lukemarsden/flocker,1d4Nf6/flocker,LaynePeng/flocker,wallnerryan/flocker-profiles,wallnerryan/flocker-profiles,mbrukman/flocker,mbrukman/flocker,w4ngyi/flocker,1d4Nf6/flocker,jml/flocker,achanda/flocker,w4ngyi/flocker,adamtheturtle/flocker,Azulinho/flocker,AndyHuu/flocker,hackday-profilers/flocker,lukemarsden/flocker,adamtheturtle/flocker,Azulinho/flocker,w4ngyi/flocker,moypray/flocker,agonzalezro/flocker,jml/flocker,moypray/flocker,jml/flocker,1d4Nf6/flocker,moypray/flocker