Automate Redis memory space analysis with cupcake-rdb
During a [recent analysis](https://gitlab.com/gitlab-com/gl-infra/scalability/-/issues/2538#note_1593195770) we forked and extended a Redis RDB dump analysis tool and published it under [cupcake-rdb](https://gitlab.com/gitlab-com/gl-infra/cupcake-rdb).
In addition to [documenting](https://gitlab.com/gitlab-com/gl-infra/scalability/-/issues/2552) the new capabilities, we may also want to consider automating the analysis and making it easily available not just for ~"group::scalability" but also stage groups.
We previously built out Redis analysis automation https://gitlab.com/groups/gitlab-com/gl-infra/-/epics/212, in particular: https://gitlab.com/gitlab-com/gl-infra/scalability/-/issues/417, https://gitlab.com/gitlab-com/gl-infra/scalability/-/issues/360, https://gitlab.com/gitlab-com/gl-infra/scalability/-/issues/362. It should be possible to extend that with the additional tooling we've introduced.
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