fix mock again :/
fix mock again :/

Signed-off-by: Victor Vieux <5e30c7222a5138067ad5bff2f2b96878cc9b735a@gmail.com>

selvik/dockerclient,denverdino/dockerclient,turtlebender/dockerclient,crhym3/dockerclient,curoverse/dockerclient,donhcd/dockerclient,samalba/dockerclient,jimmyxian/dockerclient,yp-engineering/dockerclient,ehazlett/dockerclient,flavio/dockerclient,bajh/dockerclient,dnephin/dockerclient,ibuildthecloud/dockerclient,BlueDragonX/dockerclient,divideandconquer/dockerclient