First pass at implementing Docker plugin test.
First pass at implementing Docker plugin test.

agonzalezro/flocker,mbrukman/flocker,agonzalezro/flocker,AndyHuu/flocker,hackday-profilers/flocker,wallnerryan/flocker-profiles,w4ngyi/flocker,w4ngyi/flocker,hackday-profilers/flocker,agonzalezro/flocker,mbrukman/flocker,mbrukman/flocker,hackday-profilers/flocker,wallnerryan/flocker-profiles,AndyHuu/flocker,w4ngyi/flocker,wallnerryan/flocker-profiles,AndyHuu/flocker