Fix P1 WEBRUNNER deployment failures and secret leakage

- providers/webrunner.yml: wrap loop_var under loop_control in all three
  provider provision tasks — Ansible was rejecting loop_var as a conflicting
  action statement alongside include_tasks
- deployment_engine.py: strip _SECRET_KEYS (tokens, passwords, api keys)
  from create_extra_vars() — credentials are already set as env vars by
  set_provider_environment(), no need to pass them through --extra-vars
  where they end up in process listings and logs
- deployment_engine.py: remove debug log line that dumped the full
  ansible-playbook command including all extra-vars JSON with live creds
- deployment_engine.py: create deployment log files with 0o600 permissions
  instead of world-readable 0o644
- deploy_webrunner.py: remove load_vars_file() call that was pulling
  phishing module creds (SMTP password, gophish port, domain) into the
  webrunner config dict — all provider creds already collected by
  gather_provider_config()
- deploy_webrunner.py: remove unused select_provider import
- .gitignore: narrow 'deployment*' glob to specific artifact patterns so
  deployment_engine.py is no longer excluded from tracking

.gitignore

@@ -1,6 +1,9 @@
 vars.yaml
 venv
-deployment*
+deployment_*.log
+deployment_info_*.txt
+node_chunks_*.json
+scanner_ips_*.txt
 config.yml
 logs/
 domainhunter/