[fedora-arm] Connect to hidden wifi networks at boot.

[Mostafa Faridi]

I installed Fedora Server on PI 3 and everything works.
I want to connect to hidden wifi networks.
I want when my Fedora boot, it connect to Hidden networks and I can control it by SSH over wifi.
I can not find good solutions.
The router of the wifi network uses DHCP to give IP to connected devices.