Merge "Replace ConnectivityManager as TetheringManager" into rvc-dev am: 2aa2b0a2f8 am: 969648b937

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Settings/+/11770823

Change-Id: I61799d6f67f634ef465c174edb0aed465a92ff81