Set min_sdk_version to be part of mainline modules

Modules contributing mainline modules (APK/APEX) should set
min_sdk_version as well as apex_available.

For now setting min_sdk_version doesn't change build outputs.
But build-time checks will be added soon.

Bug: 152655956
Test: m
Merged-In: I5294876cd4a234d157db1b83de4714de87394a47
Change-Id: I5294876cd4a234d157db1b83de4714de87394a47
(cherry picked from commit b5eaebaa692f03c3750e67c887e2a4e30bf1a641)
2 files changed