TestTools: remove ComponentAccumulator from ignore list

Revert commit 9324788b (from two years ago by @ssnyder) which ignored all INFO printouts from "ComponentAccumulator". This essentially makes all unit tests (e.g. CaloRec) that filter on that string (via LOG_SELECT_PATTERN) useless as they will always succeed in the reference file comparison (comparing two empty files).

This then required a lot of reference updates. Also adjusted some of the test definitions to be more strict on which lines to compare.

Thanks to @tbold for reporting.