Set min_sdk_version (for non-mainline files)

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.

This is second part of two CLs: covers non-mainline files

Exempt-From-Owner-Approval: cherry-pick from internal branch

Bug: 152655956
Test: m
Merged-In: I55336e644990d3f175e0c011856b52ec600e452a
Change-Id: I55336e644990d3f175e0c011856b52ec600e452a
(cherry picked from commit e3cf41a2)