feat(Response): expose method to reset the response

[munendrasn]

@decebals,
This is required because on calling httpServletResponse.reset(), only response gets reset. But other params like headers, cookies also need to erased from Response class

[coveralls]

Coverage decreased (-0.03%) to 18.214% when pulling 02b743e on munendrasn:add-reset into b6a195c on decebals:master.

[coveralls]

Coverage decreased (-0.03%) to 18.214% when pulling 02b743e on munendrasn:add-reset into b6a195c on decebals:master.

[coveralls]

Coverage increased (+0.8%) to 19.023% when pulling 1d2ada1 on munendrasn:add-reset into b6a195c on decebals:master.

[coveralls]

Coverage increased (+0.8%) to 19.023% when pulling 40f3c9d on munendrasn:add-reset into b6a195c on decebals:master.

[decebals]

I don't think that we need this annotation. This annotation is useful if you use mock annotation, for example

@Mock
private HttpServletResponse servletResponse;

instead of

private HttpServletResponse servletResponse = mock(HttpServletResponse.class);

[decebals]

extra empty line (please use optimize import from IntelliJ for example)

[decebals]

I am happy to see unit test code.
Also, as a curiosity, when you use Response.rest() method (a use case). Thanks!

[coveralls]

Coverage increased (+0.8%) to 19.023% when pulling 33cb7ff on munendrasn:add-reset into b6a195c on decebals:master.

[munendrasn]

@decebals ,
In some cases, I'm writing directly to writer or outputStream. Also, setting headers for response using response.header() or routeContext.setHeader().
Now, If any error or exception occurs in application, all set headers need to be removed (using servletResponse.reset()).

But, this doesn't reset headers, cookies in Response. Hence, exposing this helper will help in required reset