It seems this introduced a regression in the CentOS CI;
14:25:58 FAILED TASKS:14:25:58 -------------
14:25:58 TEST-03-JOBS
14:25:58 TEST-52-HONORFIRSTSHUTDOWN
14:25:58 TEST-63-PATH
Revert for now.
This reverts commit da3c6fc553.
This drops logs of failed unit tests in TEST-02-UNITTESTS from the journal,
as the expected logs from test-varlink-idl makes the post script fail.
Saving logs in journal is simply noisy, and we will output anyway after
qemu or nspawn finished by check_result_{qemu,nspawn}_unittests().
Those are all consumed by our parser, so they all support comments.
I was considering whether they should have a license header at all,
but in the end I decided to add it because those files are often created
by copying parts of real unit files. And if the real ones have a license,
then those might as well. It's easier to add it than to make an exception.
