libcore: Split OJ luni tests into separate APK files

All OJ luni tests are now in CtsLibcoreOjTestCases.apk which
is an instrumentation for CtsLibcoreRunner.apk.

The CtsLibcoreOjTestCases.apk has only the dex bytecode from
core-ojtests-public jar included in there and nothing else.

The cts-core-test-runner dependency is loaded dynamically
from CtsLibcoreRunner.apk.

Bug: 27521545
Change-Id: I151fb7f7d375b79a9fa00e89a88c5432157b1ada
10 files changed