test: Save a log from each running component

Currently the pytest tests don't save any log from the running
components, leading to an harder debug of it later.

So modify the CAMComponent class and the pytest fixture to save
each time one component runs, a log file, which will be placed
on a folder specific for each test.

Add missing word to the dictionary to please the spell checker
and modify the header to update the year of the changes.

Signed-off-by: Luca Fancellu <luca.fancellu@arm.com>