[automerger skipped] Fix CtsTetheringTest on devices without permanent softAp interfaces. am: 3abe36567c -s ours am: b49bc69af3 -s ours

am skip reason: Change-Id I0ba6bc9dcbf7829dcad5561c707d5f5c5540f10b with SHA-1 24d8b8391e is in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/cts/+/11863001

Change-Id: Iee403b18ad68d5e1cb314abfc8f0e29f30fb6000
tree: 0c09f004794e802f12aefbb0fa536b089aa17286
  1. tests/