kunit.py: handle timeout Make kunit_kernel.py terminate process and append timeout status to log on timeout. Make kunit_parser.py handle timeout case when parsing and displaying output. Signed-off-by: Avi Kondareddy <avikr@google.com> Google-Bug-Id: 116318265 Change-Id: Ieb4190586e69c70b3c754d21e40f7e80593323d5