Update code generation to 1.5

[gmarz]

Breaking changes that need to be addressed:

• Full parameter removed from indices flush elastic/elasticsearch@45dc3ef
• ExpandWildcards changed from list to enum elastic/elasticsearch@fc4b99e
• IndicesPutAlias removed
• TermvectorGet removed
• Termvector removed

[Mpdreamz]

I'm convinced the termvector changes are not correct.

I send a PR to include the changes introduces in: elastic/elasticsearch#7530

to both es master and 1.4 branches but they are no longer reflected in the 1.5 branches.

https://github.com/elastic/elasticsearch/blob/v1.4.5/rest-api-spec/api/termvector.json

https://github.com/elastic/elasticsearch/blob/v1.5.0/rest-api-spec/api/termvector.json

For now I'll manually revert these changes in our json and then send a PR to es core to update the specs in the 1.5 branches.

[Mpdreamz]

IndicesPutAlias removed the ability to not specify {index} in the url causing the ForAll methods on the lowlevel client to dissapear, and the resulting dispatch code paths (which NEST never used to begin with).

Added them back (for 1.x binary assembly compatibility) but with obsolete messages that cause compiler failures since we won't be able to dispatch these any more.

[Mpdreamz]

@gmarz I dont see IndicesGetRequestParameters in our develop or in the change set are you positive it wasn't always named GetIndexRequestParameters ? Looks like the manual rename was in place from the start

https://github.com/elastic/elasticsearch-net/blame/develop/src/Nest/DSL/GetIndexDescriptor.cs#L72-L73

[Mpdreamz]

The full option on flush has been removed in 1.5 too elastic/elasticsearch#9559 and covered by @gmarz in this commit already.

[Mpdreamz]

And I just see thats the first checked item already haha, these bwc code changes is is giving me googly eyes 👀

[gmarz]

@Mpdreamz I don't see IndicesGetRequestParameters either...strange I could have sworn I saw it in the diff, but I must have been mistaken.

[gmarz]

@Mpdreamz changes LGTM 👍