- Add `fixed_ip` field to all 369 JSON files in examples directory
- Set to `true` for 8 files listed in google_chrome.json multi_apps
- Set to `false` for remaining 361 files
- Add `possibility_of_env_change` field to 363 JSON files missing this field
- Set to "low" for newly added fields
- Preserve existing values (4 medium, 2 high) for 6 files that already had this field
This ensures consistent configuration schema across all evaluation examples
while maintaining backward compatibility with existing settings.
