add tests for ReEncrypt

Author: kessplas

src/main/java/software/amazon/encryption/s3/S3EncryptionClient.java

@@ -258,6 +258,7 @@ public ReEncryptInstructionFileResponse reEncryptInstructionFile(ReEncryptInstru
           DecryptMaterialsRequest.builder()
             .algorithmSuite(algorithmSuite)
             .encryptedDataKeys(Collections.singletonList(originalEncryptedDataKey))
+            .materialsDescription(contentMetadata.materialsDescription())
             .s3Request(request)
             .build()
         );