config_tether_wifi_regexs need to be customized
based on feature set supported for different targets.
softap0 will be default interface for STA+SAP supported
targets. Other targtes will have wlan0 as default interface.
CRs-Fixed: 2087745
Change-Id: If1f0af51f7ec46e116d96d9164b4ffee9751ced2