Recording interrupt in the sample response

**Sebb** ([Bug 58302](https://bz.apache.org/bugzilla//show_bug.cgi?id=58302&redirect=false)):
The interrupt() function of the HTTP Sampler (and probably others) generally results in a failed sample. In the case of HTTP, a very similar response can occur if there are problems with the remote server.

It would be useful to be able to distinguish these responses somehow.

One way to do so would be to record the fact that the interrupt was applied to a particular sample, and then add that to the response message/code.

The response data should probably still contain the stack trace

OS: All