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: I662ad951a3221f967b53e7af65cb203a4b4a5e5d
Change-Id: I662ad951a3221f967b53e7af65cb203a4b4a5e5d
(cherry picked from commit d40f05a61897c4ba746dd2b383fff0c158026c1f)
1 file changed