integration_test: less output on tests
integration_test: less output on tests

liron-l/go-dockerclient,tarsisazevedo/go-dockerclient,achanda/go-dockerclient,paulbellamy/go-dockerclient,csrwng/go-dockerclient,ybogdanov/go-dockerclient,bboreham/go-dockerclient,jefferai/go-dockerclient,ybogdanov/go-dockerclient,csrwng/go-dockerclient,tarsisazevedo/go-dockerclient,davidstack/go-dockerclient,eliasgs/go-dockerclient,fsouza/go-dockerclient,davidstack/go-dockerclient