### Why are the changes needed?
This ensure the Kyuubi server is promptly informed for any Kubernetes resource changes after startup. It is highly recommend to set it for multiple Kyuubi instances mode.
### How was this patch tested?
Existing GA and Integration testing.
### Was this patch authored or co-authored using generative AI tooling?
No.
Closes#7027 from turboFei/k8s_client_init.
Closes#7027
393b9960a [Wang, Fei] server only
a640278c4 [Wang, Fei] refresh
Authored-by: Wang, Fei <fwang12@ebay.com>
Signed-off-by: Wang, Fei <fwang12@ebay.com>
4fc201e85d