Intent of Test_AddOrUpdateRemoteCluster_ShardCount_Multiple

All 1 exact test in this concept. Every test is marked by where it enters the hierarchy.

go.temporal.io/ 1 test
- server/ 1 test
  - service/ 1 test
    
    frontend/ 1 test
    
    TestAdminHandlerSuite/ 1 test
    
    go.temporal.io/server/service/frontend/TestAdminHandlerSuite/Test_AddOrUpdateRemoteCluster_ShardCount_Multiple Introduced here