fix tests failure caused by new default monitor_retries config
Merge pull request #283 from yyejun/fix_tests

fix tests failure caused by new default monitor_retries config
report queued job as unknown
run queued job on tron restart
add tests
fix a test
Merge pull request #284 from yyejun/report_queued_unknown

report queued job as unknown
Merge remote-tracking branch 'yelp/master' into fix_incorrect_failure_handling
fix tests