Merge "Move CTS specific checker unit tests to cts-tradefed-tests" am: fcafceb5a2 am: 49c2103004 am: ef1003dbcd

Original change: https://android-review.googlesource.com/c/platform/cts/+/1509048

Change-Id: I6e557dd810fc91de0421f4261d223c8bb41ee5ad