* Do not update statistics at service collector startup
* Configurable collector interval
* Introduce initial random delay
* Prevent reporting metrics until the stats have been collected
* Apply suggestion from code review
* Remove specific stats from usage stats service
* Create statscollector service
* refactor
* Update and move tests
Mostly equivalent tests to before, but they've been divided over the two
services and removed the behavior driven legacy from GoConvey to
reduce the complexity of the tests.
* Collect featuremgmr metrics (copied over from #47407)
I removed the metrics registration from the feature manager in the merge
and re-add them in this commit. Separated to make things easier to
review.
Ryan McKinley
Sofia Papagiannaki
Andres Martinez Gotor
Emil Tullstedt
idafurjes
Tania B