1,Fix sniffer bug caused by mode switch
2,Reduce WiFi bin size
3,Add TX packets size check
4,Fix scan get rssi error
5,Add wifi stop check at WiFi deinit entry
6,Return fail when setting AP's channel is out of range
7,Fix the bug for setting channel when WiFi in NULL mode
Currently CI test environment is complicated, usually includes NIC, AP.
These devices are not used for a lot test cases. Therefore we split the
test environment, remove unnecessary devices. Then it will be easier to
create CI runners.
1. The test step for error code REASON_ASSOC_EXPIRE is not reliable. SoftAP
could also send error code WIFI_REASON_NOT_AUTHED
2. STA will be disconnected now if softAP restart DHCP server
