Rename to match WIFI_REASON. Also include specific error code in "Unknown failure" Exception.
Rename to match WIFI_REASON. Also include specific error code in "Unknown failure" Exception.

adafruit/circuitpython,adafruit/circuitpython,adafruit/circuitpython,adafruit/circuitpython,adafruit/circuitpython,adafruit/circuitpython