Allow ID to be of type long

[mattglet]

In the case we have "long" IDs, we should allow for that overload.

[Mpdreamz]

Hi @mattglet

Thanks for the PR it highlighted the fact that Id parameters should be of type long and not int. I've opted not to pull your code in but hunt all instances where Id's can be passed as Id and change the type to long.

👍 Can you sign the Elasticsearch CLA in case you send more PR's in the future ?

http://www.elasticsearch.org/contributor-agreement/

Thanks!

[mattglet]

Thanks @Mpdreamz, your reasoning for not pulling in the code totally makes sense... and thanks for the making the broad change! Are you planning on pushing out an updated version with this change implemented?

(also, I've signed the CLA)