Recreate Redis Counters using Snowplow events - Phase 2: Wave 3

Summary

In &7493 (closed), we instrumented the first set of Redis Counters using Snowplow events in SaaS. This is the 3rd wave of counters to be instrumented using Snowplow Events.

• redis_hll_counters.issues_edit.issues_edit_total_unique_counts_monthly Addressed in #365960 (closed)
• usage_activity_by_stage_monthly.create.merge_requests_users
• usage_activity_by_stage_monthly.create.action_monthly_active_users_ide_edit
• redis_hll_counters.search.search_total_unique_counts_monthly
• usage_activity_by_stage_monthly.create.action_monthly_active_users_design_management

Feature Flag

These events should be instrumented behind a feature flag (separate from the FF used for the first wave of metrics) in case we need to quickly turn off collection.

Testing

Local manual testing and make sure QA pipelines are passing.

Next Step

Post delivery, the data team will need to aggregate the snowplow events into counters for use in Sisense and Gainsight. Data team issue for this wave: ## Next Step

Post delivery, the data team will need to aggregate the snowplow events into counters for use in Sisense and Gainsight. Data team issue for this wave: https://gitlab.com/gitlab-data/analytics/-/issues/13209