Lists all federations configured on SPIRE Server

Example response

{
  "federation_relationships": [
    {
      "trust_domain": "example1.org",
      "bundle_endpoint_url": "https://bundle.example1.org",
      "BundleEndpointProfile": {
        "HttpsSpiffe": {
          "endpoint_spiffe_id": "spiffe://example1.org/spire-server"
        }
      }
    }
  ]
}