Right now we have this scenario:
- test result line is started
- sometimes, runTestSuite fails (like timeout), failure is reported
  but test result line remains started (we don't know yet which
  line is associated with testnode)
- when a test result line is "started" since more than 4 hours,
  test result line is redrafted
- test can be reexecuted
Speed up by removing the need of waiting alarm, by knowing which
test result line is executed by which test node, and by redrafting
immediately the test result line on test node failure