[automerger skipped] Add OkHttp tests to the generated ART MTS definition. am: 521f288f9a -s ours

am skip reason: Merged-In I7c0abf96a9e2a5b9bab0add638a3b51f51083dd4 with SHA-1 7d398b070d is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/art/+/15403028

Change-Id: I891ec37970cbe8ecefa0164f2e5b86276967a686