Fix build warning (#5828)

Author: rdettai

quickwit/quickwit-storage/src/object_storage/azure_blob_storage.rs

@@ -149,6 +149,7 @@ impl AzureBlobStorage {
     /// Sets the multipart policy.
     ///
     /// See `MultiPartPolicy`.
+    #[cfg(feature = "integration-testsuite")]
     pub fn set_policy(&mut self, multipart_policy: MultiPartPolicy) {
         self.multipart_policy = multipart_policy;
     }

quickwit/quickwit-storage/src/object_storage/s3_compatible_storage.rs

@@ -205,6 +205,7 @@ impl S3CompatibleObjectStorage {
     /// Sets the multipart policy.
     ///
     /// See `MultiPartPolicy`.
+    #[cfg(feature = "integration-testsuite")]
     pub fn set_policy(&mut self, multipart_policy: MultiPartPolicy) {
         self.multipart_policy = multipart_policy;
     }

quickwit/quickwit-storage/src/opendal_storage/base.rs

@@ -65,6 +65,7 @@ impl OpendalStorage {
         })
     }
 
+    #[cfg(feature = "integration-testsuite")]
     pub fn set_policy(&mut self, multipart_policy: MultiPartPolicy) {
         self.multipart_policy = multipart_policy;
     }