Add FL6 spec tests to AIDL VTS. am: ca46f9768c am: 65a058482b am: 1a1d9d0325 am: cc144fffe5 am: 71e94d7243

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/1866682

Change-Id: Ib085391c12ee7d82ced9f321d89799d736e7c877