Intent of controller_mock.go ×2

All 5 exact tests in this concept. Every test is marked by where it enters the hierarchy.

go.temporal.io/ 5 tests
- server/ 5 tests
  - service/ 5 tests
    
    history/ 5 tests
    
    replication/ 4 tests
    
    TestStreamReceiverMonitorSuite/ 4 tests
    
    go.temporal.io/server/service/history/replication/TestStreamReceiverMonitorSuite/TestGenerateInboundStreamKeys_1From4 Inherited TestGenerateInboundStreamKeys_1From4
    
    go.temporal.io/server/service/history/replication/TestStreamReceiverMonitorSuite/TestGenerateInboundStreamKeys_4From1 Inherited TestGenerateInboundStreamKeys_4From1
    
    go.temporal.io/server/service/history/replication/TestStreamReceiverMonitorSuite/TestGenerateOutboundStreamKeys_1To4 Inherited TestGenerateOutboundStreamKeys_1To4
    
    go.temporal.io/server/service/history/replication/TestStreamReceiverMonitorSuite/TestGenerateOutboundStreamKeys_4To1 Inherited TestGenerateOutboundStreamKeys_4To1
    
    go.temporal.io/server/service/history/TestDescribeHistoryHost Inherited handler.go ×3