Send RedisHLL metrics via Snowplow for SaaS namespaces - Phase 1
## Summary This is the pilot to test a handful of metrics traditionally pulled in SM via Redis with snowplow in SaaS. ### Pilot Metrics Pilot Metrics are indicated on [this sheet](https://docs.google.com/spreadsheets/d/1JurwXL5xso4BMPNu-SDB9VUiQrLwZ9MV0F9eznzXsT8/edit?usp=sharing) as Priority `1a` and `1b`. ### Status You can view status of the metrics in this pilot in [this sheet](https://docs.google.com/spreadsheets/d/1JurwXL5xso4BMPNu-SDB9VUiQrLwZ9MV0F9eznzXsT8/edit?usp=sharing).
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