Set owner of a VM

Request:

POST /api/vms/1921
{
  "action": "set_owner",
  "resource" : {
    "owner" : "admin"
  }
}

Response:

{
  "success": true,
  "message": "VM id:1921 name:'aab_demo_vm' setting owner to 'admin'",
  "href": "http://localhost:3000/api/vms/1921"
}