Merge "Fix CtsTetheringTest on devices without permanent softAp interfaces." am: 10f23078c1 am: 9d3ae2e188 am: 174f529ce4

Original change: https://android-review.googlesource.com/c/platform/cts/+/1331096

Change-Id: Ie138b7e5465bcd19b7804588c3068a6a3ab0ea1e
tree: f16823d3d59bd46c92f4c96051553bc3b9616c64
  1. tests/