Add `MainlineTestModuleController` support to `CtsLibcoreTestCases`. This in order to have these tests run in a Mainline context only when the ART Module (either `com.google.android.art` or `com.android.art`) is installed on the test device. Test: m mts && mts-tradefed run commandAndExit mts-art Bug: 167385698 Change-Id: I80d172e8ddc53df630e2339a6fbf633b6f51793d