get type from record if present, fallback to type_name

[ThomasLohner]

I'm storing different logs in elasticsearch and i want to utilize the type-field to separate them so i can have different mappings for each logformat.

I already took care that the _type field is in the record, but this plugin ingnores that and uses the type_name param instead.

Would it be pssoible to first check if there already is a _type field in the record and use this instead of type_name?

[pitr]

Absolutely. We are doing already this for _id and _parent. You can do the same for _type. Pull request is welcomed.