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: Ifb9e0d4cd57a0e8212341cf493cd9fb20d0e264c
Change-Id: Ifb9e0d4cd57a0e8212341cf493cd9fb20d0e264c
(cherry picked from commit da09207b693706b0ed5cc2fef65401dbe972925e)