Add infrastructure configuration files

- Add .gitignore for Ansible project (Python, temp files, secrets)
- Add ansible.cfg with optimized settings
  - Enable SSH pipelining for performance
  - Configure fact caching with jsonfile backend
  - Set roles_path and inventory defaults

.gitignore

@@ -0,0 +1,38 @@
+# Ansible
+*.retry
+*.log
+.vault_pass
+.vault_password
+
+# Python
+__pycache__/
+*.py[cod]
+*$py.class
+*.so
+.Python
+venv/
+ENV/
+
+# Temporary files
+*.swp
+*.swo
+*~
+.DS_Store
+
+# Ansible fact cache
+/tmp/ansible_fact_cache/
+
+# Sensitive data
+vault.yml
+secrets.yml
+credentials.yml
+
+# IDE
+.vscode/
+.idea/
+*.iml
+
+# Test artifacts
+.pytest_cache/
+.coverage
+htmlcov/

ansible.cfg

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+[defaults]
+inventory = inventories/development
+roles_path = roles
+host_key_checking = False
+retry_files_enabled = False
+gathering = smart
+fact_caching = jsonfile
+fact_caching_connection = /tmp/ansible_fact_cache
+fact_caching_timeout = 86400
+
+[privilege_escalation]
+become = True
+become_method = sudo
+become_user = root
+become_ask_pass = False
+
+[ssh_connection]
+pipelining = True
+ssh_args = -o ControlMaster=auto -o ControlPersist=60s -o StrictHostKeyChecking=accept-new