List secrets

[
    {
        "CreatedAt": "2017-07-20T13:55:28.678958722Z",
        "ID": "blt1owaxmitz71s9v5zh81zun",
        "Spec": {
            "Driver": {
                "Name": "secret-bucket",
                "Options": {
                    "OptionA": "value for driver option A",
                    "OptionB": "value for driver option B"
                }
            },
            "Labels": {
                "some.label": "some.value"
            },
            "Name": "mysql-passwd"
        },
        "UpdatedAt": "2017-07-20T13:55:28.678958722Z",
        "Version": {
            "Index": 85
        }
    },
    {
        "CreatedAt": "2016-11-05T01:20:17.327670065Z",
        "ID": "ktnbjxoalbkvbvedmg1urrz8h",
        "Spec": {
            "Labels": {
                "foo": "bar"
            },
            "Name": "app-dev.crt"
        },
        "UpdatedAt": "2016-11-05T01:20:17.327670065Z",
        "Version": {
            "Index": 11
        }
    }
]