Implement Glare scrubber util

Registered by Mike Fedosin

Scrubber is a utility, that cleans up artifacts that have been marked as deleted, when delayed_delete mechanism is activated. Enabling delayed_delete option means that after delete API call, the artifact will change its status to deleted, but it's data will not be deleted immediately. Afterwards (according scrubber settings), scrubber will detect the artifacts with 'deleted' statuses and delete them completely.
The scrubber can be run as a background periodically task or once as a standalone tool.

Blueprint information

Status:
Not started
Approver:
Mike Fedosin
Priority:
Undefined
Drafter:
Mike Fedosin
Direction:
Approved
Assignee:
Mike Fedosin
Definition:
Approved
Series goal:
None
Implementation:
Unknown
Milestone target:
None

Related branches

Sprints

Whiteboard

Gerrit topic: https://review.openstack.org/#q,topic:scrubber,n,z

Addressed by: https://review.openstack.org/474398
    Implement scrubber util

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Work Items

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