Fix test_hotspot_upstream_cellular failure
This change:
1. Move precondition checks prior to setup hotspot.
This removes the need of redundant clean-up if
the device doesn't meet preconditions.
2. Use unregisterAll instead of unregisterCell to
clean-up registered connections to prevent from
complex error handling in clean-up stage.
Test: m connectivity_multi_devices_snippet && \
atest CtsConnectivityMultiDevicesTestCases:ConnectivityMultiDevicesTest
Fix: 345110845
Change-Id: I4de0e7401d52f891948eb7b5a8c112a837cb0c3e
3 files changed