curl -X GET -H 'Accept: application/json'  'https://puppetdb03:8081/v2/resources' --data-urlencode 'query=
["and",
  ["=", "type", "Class"],
  ["in", "certname",
    ["extract", "certname",
      ["select-facts",
        ["=", "value", "devengrte"]
      ]
    ]
  ]
]'