Add config option to disable status updates on bundle download attempts

[patrick-east]

A user may have many OPA's deployed using bundle services and a status API configured. As-is each OPA will report a full status update every time the bundle plugin attempted to download a bundle, even if there were no changes (ETag stayed the same).

This can create a considerable amount of extra load on the status server if the deployer doesn't have a need to keep track of a like "heart beat" for the OPA instances.

A simple solution would be to add a new configuration option to the bundle configuration (or maybe status plugin?) to skip reporting these events. We would default it to enabled and allow deployers to turn it off via configuration.

Original context: #2236

[stale]

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