Add a test for `flocker-volume snapshots`.
Add a test for `flocker-volume snapshots`.

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