Add comments to TestSetupMasterInternal in pkg\ddc\jindo\master_internal_test.go

[lwxin0805]

Which function do you want to add comments to?

TestSetupMasterInternal in pkg\ddc\jindo\master_internal_test.go

What comments do you want to add?

// TestSetupMasterInternal 验证 JindoEngine.setupMasterInernal 方法在不同 Helm Release 检查和安装
// 场景下的行为：
// 1. CheckRelease 未被 Hook 时返回错误
// 2. CheckRelease 返回 exist=true 时跳过安装并成功返回
// 3. CheckRelease 返回错误时失败返回
// 4. CheckRelease 返回 exist=false 时，测试 InstallRelease：
// 4.1 InstallRelease 返回错误时失败返回
// 4.2 InstallRelease 成功时成功返回