run-tests: when building json, get time data in the same order as elsewhere The json code was changing the order of the time tuple for unclear reasons. We now use the same order as everywhere else.

run-tests: stop explicit expansion of time data We are about to record more complex time-related data, which will require repeated changes of every loop touching times data. That will also extend such lines to a point where things become too long. Instead, we iterate on each entry and expand values in the loops. We keep intermediate variables in most cases to preserve readability. The loop producing json data does a strange inversion for no obvious reason. We preserved that for now and will fix it in another changeset.

run-tests: refactor json entry creation logic We are about to add more timing related information to each entry. Having a single place where the json entry is created is going to be much simpler.

run-tests: when building json, use result.failures instead of result.faildata It is unclear to me why 'faildata' was used. Let's use the same kind of attribute as for the other groups.