[+] Rootfs: create-report.sh: Add saving debugfs` files.

Modify output messges.

Signed-off-by: Anton Sergeev <Anton.Sergeev@elecard.ru>
[*] Rootfs: Update network scripts

ifcfg:
 * Move killing wpa_supplicant from wifi_down.sh into interfaces down section file.
   Coz post-down cannot be executed if udhcpc didnt get ip. In this case wpa_supplicant stay alive.
 * Add -b option for udhcpc, from help: "Background if lease is not obtained"
wifi_led.sh: Add checking for existance WiFi led
wifi_down.sh:
 * Remove only soft killing wpa_supplicant. What do with kill -9 wpa_supplicant???
 * Comment killing udhcpc, coz this is work of ifdown

Signed-off-by: Anton Sergeev <Anton.Sergeev@elecard.ru>