Allowlist bucket owner header (#2358)

Author: RanVaknin

.changelog/b772315fdda94ce895c4cae2bbef10ce.json

@@ -0,0 +1,8 @@
+{
+    "id": "b772315f-dda9-4ce8-95c4-cae2bbef10ce",
+    "type": "bugfix",
+    "description": "added x-amz-expected-bucket-owner to the list of headers we should sign",
+    "modules": [
+        "."
+    ]
+}

aws/signer/internal/v4/headers.go

@@ -38,6 +38,7 @@ var RequiredSignedHeaders = Rules{
 			"X-Amz-Copy-Source-Server-Side-Encryption-Customer-Algorithm": struct{}{},
 			"X-Amz-Copy-Source-Server-Side-Encryption-Customer-Key":       struct{}{},
 			"X-Amz-Copy-Source-Server-Side-Encryption-Customer-Key-Md5":   struct{}{},
+			"X-Amz-Expected-Bucket-Owner":                                 struct{}{},
 			"X-Amz-Grant-Full-control":                                    struct{}{},
 			"X-Amz-Grant-Read":                                            struct{}{},
 			"X-Amz-Grant-Read-Acp":                                        struct{}{},