Global orchestrator reconcileServices should look at desired state to avoid adding multiple tasks.
Global orchestrator reconcileServices should look at desired state to avoid adding multiple tasks.

Signed-off-by: Dong Chen <252dc6b7229d6040aded2d6fd307bed15f92f3c6@docker.com>

fate-grand-order/swarmkit,alyyousuf7/swarmkit,Noyan759/swarmkit,cheyang/swarmkit,cheyang/swarmkit,sungwonh/swarmkit,jlhawn/swarmkit,allencloud/swarmkit,RenaudWasTaken/swarmkit,deljuven/swarmkit,docker/swarmkit,RenaudWasTaken/swarmkit,yongtang/swarmkit,diogomonica/swarmkit,dperny/swarmkit-1,sungwonh/swarmkit,AliyunContainerService/swarmkit,elifa/swarmkit,elifa/swarmkit,allencloud/swarmkit,jlhawn/swarmkit,diogomonica/swarmkit,deljuven/swarmkit,dperny/swarmkit-1,alyyousuf7/swarmkit,Noyan759/swarmkit,yongtang/swarmkit,docker/swarmkit,fate-grand-order/swarmkit,AliyunContainerService/swarmkit