Fix network connect in wps_scanner

[stefanos1316]

Here is the wps_scanner log:

2020-12-22 22:40:24,405: Waiting for WiFi button press; press ^C and button to abort
2020-12-22 22:40:41,072: WiFi button pressed
2020-12-22 22:40:41 Acquiring WiFi
2020-12-22 22:40:41 Turn on WiFi
2020-12-22 22:40:41 Temporary stop beacon transmissions
2020-12-22 22:40:59 Acquired WiFi
2020-12-22 22:40:59 Trying to connect to PrimeTel-592
RTNETLINK answers: File exists
2020-12-22 22:41:00 Successfully connected to network
2020-12-22 22:41:01,518: Turn green LED on
2020-12-22 22:41:01 Obtained network connection
2020-12-22 22:41:01 Killing update_filter_d's sleep process
2020-12-22 22:41:40,855: No contact match
2020-12-22 22:41:41 Releasing WiFi
2020-12-22 22:41:41 Released WiFi
2020-12-22 22:41:42,036: Waiting for WiFi button press; press ^C and button to abort

I was unable to connect to my parent's WiFi to change the name to Epidose. To update your current image execute the following steps:

• Mount your microSD card in the PC and enable the WiFi by commenting the ip link set wlan0 down from the media/dspinellis/rootfs/etc/rc.local (I guess this is your path for the microSD)
• Insert back your microSD to the epidose and restart your device
• Then pull the latest changes, after you merged this commit, after entering the epidose directory (found in /home/epidose/)
• Build again make fast-install
• Uncomment the line ip link set wlan0 down from the /etc/rc.local
• sudo reboot
• Now you are ready to test if the epidose connects to the epidose network
• After pressing the Wifi button you need to wait approximately 15 seconds (as defined in the epidose/device/util.sh) in order to obtain network connection (you may also see the green LED blink for two seconds)
• You can ssh or ping to the device IP address to verify that your device has a network connection