Intent of example_cert_that_is_empty_file_on_server, example_cert_that_does_not_exist_on_server

All 2 exact tests in this concept. Every test is marked by where it enters the hierarchy.

go.temporal.io/ 2 tests
- server/ 2 tests
  - tools/ 2 tests
    
    tdbg/ 2 tests
    
    Test_fetchCACertFromUrl/ 2 tests
    
    go.temporal.io/server/tools/tdbg/Test_fetchCACertFromUrl/example_cert_that_does_not_exist_on_server Introduced here
    
    go.temporal.io/server/tools/tdbg/Test_fetchCACertFromUrl/example_cert_that_is_empty_file_on_server Introduced here