Add status code and response headers of the last request to java and c#

[ivanmartinvalle]

Per #990

I would like to add the ability to return the status code and response headers from the previous API call from java and csharp. The python client already provides this ability via the last_response variable. This is necessary for our API, as we need the value of the Location header after a POST request.

Approach: Before returning the response body, set the non-body parts of the response on ApiClient.

[ivanmartinvalle]

@wing328 I would like to get your suggestion merged, but it appears that there is a failure on one of the scala tests. It happens with and without my changes locally (and they definitely don't look related). Any insight as to what I can do to move forward?

[fehguy]

@ivanmartinvalle I'm seeing the tests pass via travis-ci. Can you run off a clean master branch? What is the error you're getting?

[ivanmartinvalle]

@fehguy the last commit before mine is "Merge pull request #1123 from wing328/python_typo".

The error is in swagger-scala-client
Tests in error:
UserApi should fetch a user(UserApiTest): 12 was not equal to 1

[wing328]

@ivanmartinvalle my commit (#1123) does not change the Scala client. Let me look into that as I suspect it's due to data change in the server side (petstore server)

[wing328]

@ivanmartinvalle the user record looks good:

{
  "id": 1,
  "username": "user1",
  "firstName": "first name 1",
  "lastName": "last name 1",
  "email": "[email protected]",
  "password": "XXXXXXXXXXX",
  "phone": "123-456-7890",
  "userStatus": 1
}

let me reopen this PR to trigger the test again and see if the error persists.

[wing328]

@ivanmartinvalle now the tests passed.

[wing328]

@ivanmartinvalle thanks for the PR to add status and response header to API client of Java and C#.

Testing looks good.

[wing328]

UPDATE: we've replaced this approach (varaibles to store the last status code and response headers) with an additional method WithHttpInfo, e.g. https://github.com/swagger-api/swagger-codegen/blob/master/samples/client/petstore/java/okhttp-gson/src/main/java/io/swagger/client/api/PetApi.java#L123-L137