Twister now supports using YAML lists for all fields that were written
as space-separated lists. Used twister_to_list.py script. Some artifacts
on string length are due to how ruamel dumps content.
Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
Adds tests for the custom timestamp functionality. It also
includes a basic test for the default behaviour.
Signed-off-by: Hein Wessels <heinwessels93@gmail.com>