Deleted artifact are shown in list output

[Mike Fedosin]

Current list output shows all artifacts, including deleted:

GET /artifacts/images

Expected output:
{
    "images": [],
    "schema": "/schemas/images",
    "first": "/artifacts/images"
}

Actual output:
{
    "images": [
        {
            "container_format": null,
            "min_ram": null,
            "updated_at": "2016-09-03T20:32:58Z",
            "owner": "0c86483fe46d4ca3a85b36f5ba9b75bc",
            "provided_by": null,
            "id": "2e68de20-ae55-4251-a3a7-b615ebe9ae3b",
            "disk_format": null,
            "version": "1.0.0",
            "cloud_user": null,
            "image": null,
            "metadata": {},
            "status": "deleted",
            "description": "",
            "tags": [],
            "image_indirect_url": null,
            "activated_at": null,
            "visibility": "private",
            "supported_by": null,
            "min_disk": null,
            "icon": null,
            "name": "image",
            "license": null,
            "created_at": "2016-09-03T20:32:22Z",
            "license_url": null,
            "release": []
        }
    ],
    "schema": "/schemas/images",
    "first": "/artifacts/images"
}

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/365363

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/365363
Committed: https://git.openstack.org/cgit/openstack/glare/commit/?id=dd9047ce14ff0a0436280e6319d7634063999f49
Submitter: Jenkins
Branch: master

commit dd9047ce14ff0a0436280e6319d7634063999f49
Author: Mike Fedosin <email address hidden>
Date: Sun Sep 4 21:01:48 2016 +0300

    Fix that deleted artifacts were shown in list output

    Change-Id: Ifd2e1397b895d6fc0a8a0013fc08fc229f59b2e7
    Closes-Bug: #1620086