Per-zone logging


It would be nice to be able to enable logging for just a particular zone, instead of all our zones. We forward our logs to a paid service, and end up exceeding even our overage allotment when we enable KeyCDN logging.
To be clear, we wouldn’t need zone-specific log settings, as we only use it occasionally for troubleshooting a single zone. So just a selector on the logging configuration to do a single zone or all zones would be sufficient for our needs.