CEC: Add VTS test to set language am: 3857aae7f1 am: 83c8fc6343 am: 529dae159a am: 53b4ececb7

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/1577105

Change-Id: If179d0ce3a3c55e26f35ae144799060ff046b48c