WIP: Geo testing tool

What does this MR do?

Are there points in the code the reviewer needs to double check?

Why was this MR needed?

TODO

• Seed the primary with a large number of projects
• Bulk pushes in multiple repositories
• Bulk project creations
• Bulk project deletions on primary
• Bulk project deletions on secondary
• Bulk project renames
• Make sure that we have metrics for all of these events
• Build dashboards to measure how long/whether the events were properly updated on the secondaries

Does this MR meet the acceptance criteria?

• Changelog entry added, if necessary
• Documentation created/updated
• API support added
• Tests
  • Added for this feature/bug
  • All builds are passing
• Conform by the merge request performance guides
• Conform by the style guides
• Branch has no merge conflicts with master (if it does - rebase it please)
• Squashed related commits together

What are the relevant issue numbers?

Closes #3117

/cc: @stanhu @brodock @to1ne