docs: add guide to deploy k8s cluster in UCloud

[uk8s]

Add guide to deploy k8s cluster in UCloud.

And to help us figure out who should review this PR, please put an X in all the areas that this PR affects.

• [ ] Configuration Infrastructure
• [x] Docs
• [ ] Installation
• [ ] Networking
• [ ] Performance and Scalability
• [ ] Policies and Telemetry
• [ ] Security
• [ ] Test and Release
• [ ] User Experience
• [ ] Developer Infrastructure

[istio-testing]

Hi @uk8s. Thanks for your PR.

I'm waiting for a istio member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

I understand the commands that are listed here.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[zirain]

/ok-to-test

[craigbox]

Hi uk8s,

The point of these pages isn't to list all the Kubernetes environments that Istio can be installed in, as the idea is that it should install in all of them out of the box.

Instead, it should point out anything special you need to do to make a cluster ready for running Istio.

This was important when there was special configuration required, but these days there doesn't seem to be much of that left. I will be removing all these pages and moving them to an appendix later in the year.

I don't see anything in your example other than a "how to install" guide, so I'd rather not take it into the Istio docs at this time.

(Are you listed on our Ecosystem page?)