simplify dict comparison in test helper waiting_for_container
simplify dict comparison in test helper waiting_for_container

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