previously the tool just reprinted out TRACE and ERROR log lines.
Now make it actually collect up TRACE and ERROR into individual
events which will make it easier to cross reference to tempest
tests.
built additional features around stack trace tooling, making it
simpler to find unique events.
Change-Id: Id1fed3343e79e75da3145b5a9c19820b65a0d548
this is useful to go and collect all the stack traces found for a
particular test run. Helps us easily identify when stack traces
are being generated even on good runs.
Change-Id: Ia5b95be7bc1a425630fba06c7c65cbaa9fa7079f