✨ update metadataSearch to pass the right arguments

Issue: CLDSRV-813

Author: DarkIsDude

lib/api/metadataSearch.js

@@ -19,6 +19,8 @@ function handleResult(listParams, requestMaxKeys, encoding, authInfo,
     listParams.maxKeys = requestMaxKeys;
     // eslint-disable-next-line no-param-reassign
     listParams.encoding = encoding;
+    // eslint-disable-next-line no-param-reassign
+    listParams.optionalAttributes = [];
     let res;
     if (listParams.listingType === 'DelimiterVersions') {
         res = processVersions(bucketName, listParams, list);