CLDSRV-780: add bucket owner to server access log in multiObjectDelete

Author: leif-scality

lib/api/multiObjectDelete.js

@@ -502,6 +502,10 @@ function multiObjectDelete(authInfo, request, log, callback) {
                 if (bucketShield(bucketMD, 'objectDelete')) {
                     return next(errors.NoSuchBucket);
                 }
+                if (request.serverAccessLog) {
+                    // eslint-disable-next-line no-param-reassign
+                    request.serverAccessLog.bucketOwner = bucketMD.getOwner();
+                }
                 // The implicit deny flag is ignored in the DeleteObjects API, as authorization only
                 // affects the objects.
                 if (!isBucketAuthorized(bucketMD, 'objectDelete', canonicalID, authInfo, log, request)) {