Add version and version_type to utils.DOC_META_FIELDS

[lijok]

That way I can index something like this

FileDocument(
    id=3000,
    alive=True,
    access_level=1,
    caption='test',
    meta={
        'id': 3000,
        'version_type': 'external',
        'version': 99,
    }
)

using bulk helper and utilize versioning

https://www.elastic.co/guide/en/elasticsearch/reference/current/docs-bulk.html#bulk-versioning

[armando1793]

@lijok I did

doc = Document.get(id=somevalue)
// manipulate doc values
doc.meta["version"] = None

I think version in meta should be overridden when retry_on_conflict is not None

edit/additional info: This was done inside a kafka consumer so in my case there might not be immediate problems when doing this since the document is queried for every message consumed but I'm not sure if this is safe for uses