Rolling restart (#619)

* implement rolling restart functionality

bouncing each image individually can ensure that a group of docker
containers launched with docker-compose can stay 100% up during deploy.

* move rolling restart into a function

* honor params.Cleanup

Co-authored-by: Simon Aronsson <simme@arcticbit.se>

pkg/types/update_params.go

@@ -12,4 +12,5 @@ type UpdateParams struct {
 	Timeout        time.Duration
 	MonitorOnly    bool
 	LifecycleHooks bool
+	RollingRestart bool
 }