fix typo in test_infrastructure.py
fix typo in test_infrastructure.py

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