fix(pageserver): write to both v1+v2 for aux tenant import

Signed-off-by: Alex Chi Z <chi@neon.tech>

storage_controller/src/service.rs

@@ -4062,7 +4062,13 @@ impl Service {
                 placement_policy: Some(PlacementPolicy::Attached(0)), // No secondaries, for convenient debug/hacking
 
                 // There is no way to know what the tenant's config was: revert to defaults
-                config: TenantConfig::default(),
+                config: {
+                    let mut config = TenantConfig::default();
+                    // TODO: change it back to default once we finish auxv2 migration
+                    // we write to both v1+v2 storage, so that the test case can use either storage format for testing
+                    config.switch_aux_file_policy = Some(models::AuxFilePolicy::CrossValidation);
+                    config
+                },
             })
             .await?;