add some tests in clusterapi create
add some tests in clusterapi create

Signed-off-by: Victor Vieux <ce584ac70734cfa5a848cd28039798932c7ea675@docker.com>

fate-grand-order/swarmkit,alyyousuf7/swarmkit,AliyunContainerService/swarmkit,sungwonh/swarmkit,yongtang/swarmkit,cezarsa/swarmkit,cezarsa/swarmkit,diogomonica/swarmkit,yp-engineering/swarmkit,deljuven/swarmkit,elifa/swarmkit,jlhawn/swarmkit,dperny/swarmkit-1,cheyang/swarmkit,aaronlehmann/swarmkit,runshenzhu/swarmkit,elifa/swarmkit,sungwonh/swarmkit,allencloud/swarmkit,diogomonica/swarmkit,fate-grand-order/swarmkit,RenaudWasTaken/swarmkit,aaronlehmann/swarmkit,dperny/swarmkit-1,cheyang/swarmkit,yongtang/swarmkit,jlhawn/swarmkit,Noyan759/swarmkit,AliyunContainerService/swarmkit,allencloud/swarmkit,vasil-yordanov/swarmkit,runshenzhu/swarmkit,deljuven/swarmkit,yp-engineering/swarmkit,alyyousuf7/swarmkit,vasil-yordanov/swarmkit,Noyan759/swarmkit,docker/swarmkit,RenaudWasTaken/swarmkit,docker/swarmkit