NTP Group Designation

curl -X POST -H 'Content-Type: application/json' \
-d '{
    "id": "ddab2071-26ea-4261-af09-7b6b97fa04d2",
    "name": "qa_group",
    "environment": "production",
    "parent": "00000000-0000-4000-8000-000000000000",
    "rule": [
        "~",
        "name",
        "agent1.puppetlabs\\.vm$"
    ],
    "variables": {
        "ntpservers": [
            "0.XX.pool.ntp.org",
            "1.YY.pool.ntp.org"
        ]
    },
    "classes": {
        "ntp": {
            "preferred_servers": [
                "0.uk.pool.ntp.org",
                "1.uk.pool.ntp.org"
            ]
        }
    }
}' \
  http://localhost:1261/v1/groups/ddab2071-26ea-4261-af09-7b6b97fa04d2