To move ironicclient legacy jobs to zuulv3 the the following changes
were necessary:
- Change `tox.ini` to pass envrioment variables
- Clean `post_test_hook.sh` to avoid legacy variables (`$USER` and
`$BASE`), removing `generate_testr_results` function since we only
get `testrepository.subunit` in logs and the results of the tests
are present in job-output file.
- Convert `post_test_hook.sh` and `run_functional.sh` into
`playbooks/functional/run.yaml` to run after the setup.
Change-Id: I6a5b3f82c238083b66bdf6f379092260d367d82d
2c349cc893