sysprop_library correctly supports apex_available and min_sdk_version

This fixes a bug that apex_available and min_sdk_version properties of a
sysprop_library module are not forwarded to the generated cc or java
modules.

Bug: 181942475
Bug: 181940232
Test: m nothing

Change-Id: I03bcb5836f080aecd452021a3ffe003f36eb652e