Proposal: maintenance window and maintenance blackout window

[secat]

This is issue is to discussed a proposal in order to improve the operator-marketplace CatalogSourceConfig CRD.

If I understand well the current behavior of this controller, the catalog sources are fetch from an app-registry using a polling mechanism every hour.

If it is the current behavior, the operator-marketplace could be improved by letting a user configure a maintenance window (e.g. update the catalog source every Monday of each week) and with an optional blackout window where the catalog source would not be updated (e.g. start date: 2019-12-23 to end date: 2020-01-10).

@awgreene, @aravindhp, @tkashem, @kevinrizza, and @ecordell WDYT of that kind of proposal? Is it a feature that could be added to the operator-marketplace?