Add some tests for a hypothetical resize_volume API.  Also make some simple tweaks to existing create_volume tests.
Add some tests for a hypothetical resize_volume API.  Also make some simple tweaks to existing create_volume tests.

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