ansible-lint: Fixing broken tests

[djgalloway]

Before:

2025-02-24T20:32:22.8480111Z WARNING: PATH altered to include /usr/bin
2025-02-24T20:32:22.9998767Z Unable to find a working copy of ansible executable. CompletedProcess(args=['ansible', '--version'], returncode=1, stdout='', stderr='Traceback (most recent call last):\n  File "/home/runner/.local/bin/ansible", line 62, in <module>\n    import ansible.constants as C\n  File "/home/runner/.local/lib/python3.12/site-packages/ansible/constants.py", line 15, in <module>\n    from ansible.config.manager import ConfigManager, ensure_type, get_ini_config_value\n  File "/home/runner/.local/lib/python3.12/site-packages/ansible/config/manager.py", line 29, in <module>\n    from ansible.module_utils.six.moves import configparser\nModuleNotFoundError: No module named \'ansible.module_utils.six.moves\'\n')
2025-02-24T20:32:23.0288372Z ##[error]Process completed with exit code 4.

Fixes:

• Specify vault password file as /dev/null. Avoids modifying ansible.cfg
• --break-system-packages because these are ephemeral containers we don't care about
• Remove PATH since we're installing ansible globally via pip