I notice that kops recently added support for Digital Ocean https://github.com/kubernetes/kops/blob/master/docs/tutorial...
So we should be able to add a command `jx create cluster do` for using kops on DO - the current `jx create cluster aws` uses kops under the covers to spin up the kubernetes cluster.
I’ve raised this issue to track it: https://github.com/jenkins-x/jx/issues/705