dongjiang

> @dongjiang1989 please explain why this is needed, thanks. @shreemaan-abhishek thanks for your review. EndpointSlices provide a simple way to track network endpoints within a Kubernetes cluster. They offer a...

> @dongjiang1989 you could follow these test cases: https://github.com/apache/apisix/blob/master/t/kubernetes/discovery/kubernetes2.t Thanks. I got it!

@monkeyDluffy6017 @shreemaan-abhishek Please re-check. Thanks

ignore e2e test case

> We should update the documentation for this feature. Thanks. Added it

/test

@AlinsRan @shreemaan-abhishek @monkeyDluffy6017 please re-check，thanks

@inteon PTAL

> Bump. Came across this today. Can you use this PR to solve your problem? @KrisJohnstone

@inteon In your environment, what is the certmanager version? Please execute `kubectl api-versions | grep "certmanager"`