Inconsistent container registry storage statistics
We have recently introduced the ability to measure and display storage usage for the Container Registry. Since then, there have been a few reports of inconsistencies.
This epic is meant to serve as the root for the investigation and fixing of related issues.
This work is broken down into two stages, which should be actioned in this order:
1. **Identifying and fixing bugs that lead to new inconsistencies (&9106)**
1. **Scaling limitations on top-level namespace usage calculation (&9415)**
1. **Repair inconsistencies that have occurred in the past (&9107)**
Please refer to the corresponding epics for individual tasks.
### Owners
* Team: [Container Registry](https://about.gitlab.com/handbook/engineering/development/ops/package/container-registry/)
* Most appropriate slack channel to reach out to: `#g_container-registry`
* Best individual to reach out to: @jdrpereira
* PM: @trizzi
* EM: @crystalpoole
epic