{
    "EC2Servers.list_servers": [
        {
            "runner": {
                "type": "constant",
                "times": 1,
                "concurrency": 1
            },
            "context": {
                "users": {
                    "tenants": 1,
                    "users_per_tenant": 1
                },
                "ec2_servers": {
                    "flavor": {
                        "name": "m1.tiny"
                    },
                    "image": {
                        "name": "^cirros.*uec$"
                    },
                    "servers_per_tenant": 2
                }
            }
        }
    ]
}