Merge "Add tethering privileged test" am: c6cab2d5e8 am: 54c4148f8f am: 7b26300c42 am: 0f58ad8352 am: 7de5ad084c

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1345361

Change-Id: Ibf452f7cc59bfa220d55878ea57e6486f4c4b17c