• CostManagement reports a billing_marketplace_instance_id as instance_id
  • azure: https://github.com/project-koku/koku/blob/57da4ecff42132f15ad9ba4ab2bed822c87c7eb5/koku/subs/subs_data_messenger.py#L190
  • aws: https://github.com/project-koku/koku/blob/57da4ecff42132f15ad9ba4ab2bed822c87c7eb5/koku/subs/subs_data_messenger.py#L104

• Rhelemeter reports subman id as instance_id
  • https://github.com/RedHatInsights/host-metering/blob/747fef885afb35a7b9bfb60f7bd4828dd4f396c3/hostinfo/subscription.go#L34

During deduplication during event reconciliation, a`billing_marketplace_instance_id` is never going to match a `subman_id`, so deduplication won't work even with adjustments in place.

Metrics from rhelemeter also report a billing_marketplace_instance_id (https://github.com/RedHatInsights/host-metering/blob/747fef885afb35a7b9bfb60f7bd4828dd4f396c3/notify/prometheus.go#L199). We should use that so we can compare them to deduplicate Cost and Rhelemeter events