Merge "[stats] add metrics for package installer v2" into rvc-dev am:...

Merge "[stats] add metrics for package installer v2" into rvc-dev am: d11054d3 am: f387b872 am: 820dd946 am: c8a2b51c am: f600d57a

Change-Id: Ifed400acd09c9d8b0b035940dd1ce69e2be5c527