Cloud migration: upload snapshot files using presigned url (#90273)

* Cloud migration: upload snapshot files using presigned url

* log error if index file cannot be closed

* log error if file cannot be closed in uploadUsingPresignedURL

pkg/services/cloudmigration/objectstorage/objectstorage.go

@@ -0,0 +1,10 @@
+package objectstorage
+
+import (
+	"context"
+	"io"
+)
+
+type ObjectStorage interface {
+	PresignedURLUpload(ctx context.Context, url, key string, reader io.Reader) error
+}