### _Why are the changes needed?_
Support to list server with kyuubi-admin/kyuubi rest client.
### _How was this patch tested?_
- [x] Add some test cases that check the changes thoroughly including negative and positive cases if possible
- UT for AdminRestAPI
- UT for AminCtlArgument
- UT for AdminCtl
- [ ] Add screenshots for manual tests if appropriate
- [x] [Run test](https://kyuubi.readthedocs.io/en/master/develop_tools/testing.html#running-tests) locally before make a pull request
Closes#4889 from turboFei/list_server.
Closes#4889
bfd13fbde [fwang12] nit
0a0131552 [fwang12] list server
Authored-by: fwang12 <fwang12@ebay.com>
Signed-off-by: fwang12 <fwang12@ebay.com>
52d3bf25ed