Create API(s) to delete old cbcollect archives on cluster node(s)

The main goal of this ticket is to provide an API (or two) to manage old cbcollect archive files. The two main functional goals for this is to provide and API that does (one, or both of these):

1. given a numeric value X remove all cbcollect archives older than X hours. Unit is hours as in: "delete all cbcollects older than X hours ago".
2. given a time period Y, continually delete cbcollects older than Y. The unit in question here is months, as in: "delete all cbcollects older than Y months old, continually"
3. ???

This ticket is relatively low-priority since we haven't had customers run into disk-usage issues specifically from this..