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: I2f739d776e40d4eb28fd29d3cd737b81ad2dd75a
Change-Id: I2f739d776e40d4eb28fd29d3cd737b81ad2dd75a
(cherry picked from commit e60c9f6757fa9401fef25584952dfbca3fe587a3)