WeTest creates temporary files which are not removed

[vnadot]

I run a first time the script (with macros) as user a. The script works fine. Then I try to run it as user b and I got the following message:

$ ./${WETEST_PATH}/${WETEST_NAME} ./test/misc/WeTest/destination/WeTest_sbct_destinations.yaml --no-gui --force-play --propagate-macros -m on_failure="continue"
Traceback (most recent call last):
  File "/nix/store/pnkbr2dx35h9rz9zn3fgvcgvfr73smvs-python3.9-wetest-2.0.0rc1/bin/..wetest-wrapped-wrapped", line 9, in <module>
    sys.exit(main())
  File "/nix/store/pnkbr2dx35h9rz9zn3fgvcgvfr73smvs-python3.9-wetest-2.0.0rc1/lib/python3.9/site-packages/wetest/command_line.py", line 426, in main
    suite, configs = generate_tests(
  File "/nix/store/pnkbr2dx35h9rz9zn3fgvcgvfr73smvs-python3.9-wetest-2.0.0rc1/lib/python3.9/site-packages/wetest/command_line.py", line 171, in generate_tests
    tests_data = ScenarioReader(
  File "/nix/store/pnkbr2dx35h9rz9zn3fgvcgvfr73smvs-python3.9-wetest-2.0.0rc1/lib/python3.9/site-packages/wetest/testing/reader.py", line 343, in __init__
    self.deserialized = self._deserialize()
  File "/nix/store/pnkbr2dx35h9rz9zn3fgvcgvfr73smvs-python3.9-wetest-2.0.0rc1/lib/python3.9/site-packages/wetest/testing/reader.py", line 437, in _deserialize
    new_sc = ScenarioReader(
  File "/nix/store/pnkbr2dx35h9rz9zn3fgvcgvfr73smvs-python3.9-wetest-2.0.0rc1/lib/python3.9/site-packages/wetest/testing/reader.py", line 356, in __init__
    with open(tempo_file_path, "w") as yml_wo_macros:
PermissionError: [Errno 13] Permission denied: '/tmp/no_macros.yml'

The 2 users can write in /tmp but can't overwrite the `/tmp/no_macros.yml' file of the other user.

I think that WeTest should remove these files at the end of WeTest execution (and should manage the case of a savage exit (ctrl-c in terminal for example).

(for CEA agent only: this happened here)