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.

Exempt-From-Owner-Approval: cherry-pick from AOSP

Bug: 152655956
Test: m
Merged-In: Iadf898297c1ada784a65099bdf96c944833cdb09
Change-Id: Iadf898297c1ada784a65099bdf96c944833cdb09
(cherry picked from commit 4e825b97f28fae429d999666301400916e312db6)
2 files changed