Add OkHttp tests to the generated ART MTS definition.

Add `MtsLibcoreOkHttpTestCases` to the generated ART MTS definition.

Add this test module to the existing ART MTS shard 02.

Test: m mts && mts-tradefed run commandAndExit mts-art
Test: m mts && mts-tradefed run commandAndExit mts-art-shard-02
Bug: 167385698
Change-Id: I7c0abf96a9e2a5b9bab0add638a3b51f51083dd4
1 file changed