Get all sites details across all organizations

Example response

[
  {
    "id": "e77602e0-3fb8-4734-aef9-fbc6fdcb0fa8",
    "created_at": 1576300370,
    "updated_at": 1576300370,
    "permanent": true,
    "name": "Primary",
    "description": "Headquarters",
    "scope": "192.168.0.0/24",
    "excludes": "192.168.0.5"
  }
]