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Cloned from launchpad blueprint https://blueprints.launchpad.net/nova/+spec/metadata-service-callbacks. Description: Allow guest instances to set (but not overwrite) server metadata. This allows in-guest services to communicate externally through the Openstack API. Example use case: add a script in cloud-init to report how long it took the instance to fully boot, and notify when it has booted. More discussion here: https://etherpad.openstack.org/IcehouseNovaMetadataService Specification URL (additional information): None
Updating based on BP milestone