MM-47250: Add new system console section (#21333)

* MM-47250: Add new system console section

We add a new section in system console
for products.

```release-note
Added a new section in system console
for products. For now, it only contains
boards specific settings.
```

* fix unit tests

```release-note
NONE
```

* change comment

```release-note
NONE
```

testlib/store.go

@@ -69,6 +69,7 @@ func GetMockStoreForSetupFunctions() *mocks.Store {
 	systemStore.On("GetByName", model.MigrationKeyAddCustomUserGroupsPermissions).Return(&model.System{Name: model.MigrationKeyAddCustomUserGroupsPermissions, Value: "true"}, nil)
 	systemStore.On("GetByName", model.MigrationKeyAddPlayboosksManageRolesPermissions).Return(&model.System{Name: model.MigrationKeyAddPlayboosksManageRolesPermissions, Value: "true"}, nil)
 	systemStore.On("GetByName", "CustomGroupAdminRoleCreationMigrationComplete").Return(&model.System{Name: model.MigrationKeyAddPlayboosksManageRolesPermissions, Value: "true"}, nil)
+	systemStore.On("GetByName", "products_boards").Return(&model.System{Name: "products_boards", Value: "true"}, nil)
 	systemStore.On("InsertIfExists", mock.AnythingOfType("*model.System")).Return(&model.System{}, nil).Once()
 	systemStore.On("Save", mock.AnythingOfType("*model.System")).Return(nil)