Merge "Merge "Create a TetherInterfaceStateMachine when told the interface name." into oc-dev am: be7657b038  -s ours am: 78def25969  -s ours" into oc-dr1-dev-plus-aosp
am: 61f8509891  -s ours

Change-Id: I83caf660ba34cc6abeadac44272b76638f92c29a