T793: wireguard preshared-key implementation
T793: wireguard preshared-key implementation

  - the psk is only read from a file, due to sudo it's redirection doesn't work
    file is created in /tmp (it's tmpfs), wg comand executed and the psk file
    is deleted again, to avoid leakage of the psk. It's create umaks(077) and root:root

vyos/vyos-1x,vyos/vyos-1x,vyos/vyos-1x,vyos/vyos-1x