Add ART's module-lib to "module_current"

Bug: 157639992
Test: m droid
Test: Manually verified that libcore's module-lib API is in the generated out/target/common/obj/module-lib-api.xml
Merged-In: I435140f19a0f5a81310154728c828ac70e12192a
Change-Id: I435140f19a0f5a81310154728c828ac70e12192a
(cherry picked from commit 6b107a93)