Add best-effort Ansible module bridge operation

[JakkuSakura]

Summary

• add ansible.module(...) that executes real Ansible modules on the target host (upload module + ansible module_utils/_vendor, run with stdin JSON)
• add optional extra pyinfra[ansible] and include ansible in test deps
• update local E2E and examples to use ansible.module with ansible.builtin.ping
• add SSH localhost E2E test (skipped by default via env gate)
• prefer pyinfra.operations.* when resolving CLI operation names

How To Use

Python deploy:

• ansible.module(src="examples/ansible_modules/ping.py", kwargs={"data": "pyinfra"})

CLI:

• pyinfra -y -v @local ansible.module examples/ansible_modules/ping.py data=pyinfra

Ansible Module Included

• examples/ansible_modules/ping.py is the upstream ansible.builtin.ping module (from ansible/ansible)
• it takes data (default: pong) and returns {"ping": <data>} via exit_json

Notes

• real Ansible module execution requires pyinfra[ansible]
• SSH localhost E2E test is gated by PYINFRA_E2E_SSH_LOCALHOST=1
• tested real Ansible module over SSH localhost

Validation

• uv run pytest tests/test_operations_ansible.py
• uv run pytest tests/test_operations.py -k ansible_module
• uv run pytest -m end_to_end_local -k ansible
• uv run pyinfra -y -v localhost --ssh-user $(whoami) --ssh-key ~/.ssh/id_ed25519 --data ssh_allow_agent=false --data ssh_known_hosts_file=/dev/null --data ssh_strict_host_key_checking=no ansible.module examples/ansible_modules/ping.py data=pyinfra

[Fizzadar]

Woa this is wild @JakkuSakura! SUPER interesting. Should we merge this against 3.x? There's nothing 4-specific here?

[JakkuSakura]

Seems like 3.x is fine. Let me rebase

[Dexmachi]

what's the current state of this PR?