LisaTest: Improve running tests with multiple iterations
Created by: bjackman
Currently when you run a LisaTest with experiments_conf['iterations']!=0, the test assertions are made for every experiment and the test is failed as soon as any experiment produces a failure. Only the first failure encountered is displayed.
With this patch all the results for each wload/conf pair are aggregated.
The problem is only solved across iterations: if multiple wloads or confs fail, only the first wload/conf pair that was found to have failed will be displayed.