Usage: php generate-hotspot-bootstrap.php <router_id> [ports] [tenant_db]
Example: php generate-hotspot-bootstrap.php 10 ether2,ether3 tenant_demo-isp_db

NOTE: For RADIUS-aware scripts, use the API endpoint:
  GET /api/hotspot/routers/{routerId}/bootstrap.rsc?ports=ether2,ether3&radius=auto