This adds metalava api tracking generation to the module stub rules, to make sure we know exactly what API a particular module stub exports. Bug: 147768409 Test: m update-api check-api Exempt-From-Owner-Approval: approved internally Change-Id: Iaf2ef5b5751eb208d119ddbc74481239366fe581 Merged-In: Iaf2ef5b5751eb208d119ddbc74481239366fe581 (cherry picked from commit bb61f963e362acb0f94332fc6d02948dd562b84d)