Before this patch, Jenkins builds do not fail or warn if UBSAN
produces an error. This patch introduces two new failure modes,
"error" and "death".
In "error", a junit error is generated, which causes a build to be
labeled "unstable".
In "death", a forked process constantly monitors the test logs and
kills the test run if a UBSAN error is found.
Change-Id: I783243458ac2765a97a1dd7dd40d458cc2e1d80b
Reviewed-on: http://gerrit.cloudera.org:8080/11813
Reviewed-by: Jim Apple <jbapple-impala@apache.org>
Tested-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>
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