Re-export object_store crate via DataFusion Core and Common (apache#17070)

* Re-exported the `object_store` crate in  `datafusion/core` modules.

Author: kosiew

datafusion/core/src/lib.rs

@@ -744,8 +744,10 @@ pub mod physical_planner;
 pub mod prelude;
 pub mod scalar;
 
-// re-export dependencies from arrow-rs to minimize version maintenance for crate users
+// Re-export dependencies that are part of DataFusion public API (e.g. via DataFusionError)
 pub use arrow;
+pub use object_store;
+
 #[cfg(feature = "parquet")]
 pub use parquet;
 

datafusion/core/src/test/object_store.rs

@@ -17,18 +17,20 @@
 
 //! Object store implementation used for testing
 
-use crate::execution::context::SessionState;
-use crate::execution::session_state::SessionStateBuilder;
-use crate::prelude::SessionContext;
-use futures::stream::BoxStream;
-use futures::FutureExt;
-use object_store::{
-    memory::InMemory, path::Path, Error, GetOptions, GetResult, ListResult,
-    MultipartUpload, ObjectMeta, ObjectStore, PutMultipartOptions, PutOptions,
-    PutPayload, PutResult,
+use crate::{
+    execution::{context::SessionState, session_state::SessionStateBuilder},
+    object_store::{
+        memory::InMemory, path::Path, Error, GetOptions, GetResult, ListResult,
+        MultipartUpload, ObjectMeta, ObjectStore, PutMultipartOptions, PutOptions,
+        PutPayload, PutResult,
+    },
+    prelude::SessionContext,
+};
+use futures::{stream::BoxStream, FutureExt};
+use std::{
+    fmt::{Debug, Display, Formatter},
+    sync::Arc,
 };
-use std::fmt::{Debug, Display, Formatter};
-use std::sync::Arc;
 use tokio::{
     sync::Barrier,
     time::{timeout, Duration},