Reindex from Remote option is missing

[sumithub]

NEST/Elasticsearch.Net version: 5.0.1

Elasticsearch version: 5.1.1

Description of the problem including expected versus actual behavior: Elasticsearch 5.0 brings the ability to reindex from remote cluster which seems to be missing in NEST 5.0.1. Just wondering any plans to include in forthcoming release?

Steps to reproduce:

1. Not able to run below in NEST 5.0.1
   POST _reindex
   {
   "source": {
   "remote": {
   "host": "http://otherhost:9200",
   "username": "user",
   "password": "pass"
   },
   "index": "source",
   "query": {
   "match": {
   "test": "data"
   }
   }
   },
   "dest": {
   "index": "dest"
   }
   }

Provide ConnectionSettings (if relevant):

Provide DebugInformation (if relevant):

Describe the feature:

[russcam]

Thanks for raising @sumithub; we'll add this into the next release 👍

[Mpdreamz]

Opened a PR for this: #2549