Fix: x-has-more not working for request body properly

[skrysm]

This fixes the problem that the vendor extension x-has-more doesn't work properly for request bodies.

The reason is that the same bodyParam instance is added to both the bodyParams and the allParams collection. Then, later this is done:

codegenOperation.allParams = addHasMore(allParams);
codegenOperation.bodyParams = addHasMore(bodyParams);

The second line will set the vendor extension x-has-more to false for the last body param - even if it's not the last param in allParams. And that's wrong.

[skrysm]

I'm closing this because pull request #298 is way more comprehensive and fixes the same problem.