Add a "broken test ART APEX" Soong module.

Introduce test APEX module `test_broken_com.android.art`, to be used
in a test exercising ART Mainline Module rollbacks. Instead of the
regular `libart` module, this test APEX includes a `libart-broken`
module, a "broken" version of `libart` which delibaretely crashes
during the creation of a new VM (in `JNI_CreateJavaVM`), thus
trigerring a rollback of this test APEX.

Test: m test_broken_com.android.art
Bug: 204887479
Change-Id: I5ab50dffcf517e05c7008a881cde89c6ae0a12ca
3 files changed