chromeos/test/data/network/ethernet_with_eap.onc

{
  "Ethernet":{
    "Authentication":"None",
    "EAP":{
      "ClientCertPattern":{
        "EnrollmentURI":[
          "chrome-extension://delkjfjibodjclmdijflfnimdmgdagfk/generate-cert.html"
        ],
        "IssuerCARef":[
          "{58ac1967-a0e7-49e9-be68-123abc}",
          "{42cb13cd-140c-4941-9fb6-456def}"
        ]
      },
      "ClientCertType":"Pattern",
      "Identity":"abc ${LOGIN_ID}@my.domain.com",
      "Outer":"EAP-TLS",
      "SaveCredentials":true,
      "UseSystemCAs":true
    }
  },
  "GUID":"guid",
  "Name":"name",
  "Type":"Ethernet"
}