{
  "id": "dkim",
  "openstreetmap.org": [
    "-----BEGIN RSA PRIVATE KEY-----",
    "-----END RSA PRIVATE KEY-----"
  ]
}

{
  "id": "dkim",
  "openstreetmap.org": [
    "-----BEGIN RSA PRIVATE KEY-----",
    "-----END RSA PRIVATE KEY-----"
  ],
  "osmfoundation.org": [
    "-----BEGIN RSA PRIVATE KEY-----",
    "-----END RSA PRIVATE KEY-----"
  ]
}

Add dummy DKIM key for testing
Add dummy DKIM key for testing
