Intent of namespace_handler.go ×2

All 8 exact tests in this concept. Every test is marked by where it enters the hierarchy.

go.temporal.io/ 8 tests
- server/ 8 tests
  - service/ 8 tests
    
    frontend/ 8 tests
    
    TestNamespaceHandlerCommonSuite/ 8 tests
    
    go.temporal.io/server/service/frontend/TestNamespaceHandlerCommonSuite/TestMergeNamespaceData_Adding Introduced here
    
    go.temporal.io/server/service/frontend/TestNamespaceHandlerCommonSuite/TestMergeNamespaceData_Merging Introduced here
    
    go.temporal.io/server/service/frontend/TestNamespaceHandlerCommonSuite/TestMergeNamespaceData_Nil Inherited namespace_handler.go ×1
    
    go.temporal.io/server/service/frontend/TestNamespaceHandlerCommonSuite/TestMergeNamespaceData_Overriding Introduced here
    
    go.temporal.io/server/service/frontend/TestNamespaceHandlerCommonSuite/TestUpdateGlobalNamespace_AllAttrSet Inherited namespace_handler.go ×4
    
    go.temporal.io/server/service/frontend/TestNamespaceHandlerCommonSuite/TestUpdateGlobalNamespace_NotMaster Inherited namespace_handler.go ×4
    
    go.temporal.io/server/service/frontend/TestNamespaceHandlerCommonSuite/TestUpdateLocalNamespace_AllAttrSet Inherited namespace_handler.go ×1
    
    go.temporal.io/server/service/frontend/TestNamespaceHandlerCommonSuite/TestUpdateLocalNamespace_NotMaster Inherited namespace_handler.go ×4