Capturing elapsed time of interrupted test cases due to timeout

[linzhp]

What type of PR is this?
Feature

What does this PR do? Why is it needed?
When a test case is interrupted at timeout, we don't have the pass/fail/skip event to report elapsed time. However, we can parse them from the error message at the end to figure it out. The error message looks like:

panic: test timed out after 8s
        running tests:
                TestReport (8s)
                TestReport/test_3 (2s)

Also, instead of reporting those test cases as "No pass/skip/fail event found for test", we can now report them as "Interrupted".

[fmeum]

Nice, I love contained hacks with a big impact on usability!