Log warning in rest client handler after recent surge of warning fail…

…ures

Signed-off-by: Suraj Singh <surajrider@gmail.com>

client/rest/src/main/java/org/opensearch/client/RestClient.java

@@ -343,6 +343,7 @@ private ResponseOrResponseException convertResponse(InternalRequest request, Nod
         if (isSuccessfulResponse(statusCode) || request.ignoreErrorCodes.contains(response.getStatusLine().getStatusCode())) {
             onResponse(node);
             if (request.warningsHandler.warningsShouldFailRequest(response.getWarnings())) {
+                logger.warn(Arrays.toString(response.getWarnings().toArray()));
                 throw new WarningFailureException(response);
             }
             return new ResponseOrResponseException(response);