fickit: Use DHCP during preparation and update

fickit-prepare.yml

@@ -47,8 +47,8 @@ files:
           RAID=0
       fi
 
-      ip a add 10.10.10.5/29 dev eth0
       ip link set eth0 up
+      udhcpc -i eth0
 
       # Try to detect backend/frontend setup
       if ip l | grep eth3 > /dev/null
@@ -105,7 +105,7 @@ files:
           do
               /root/install_grub ${DEFAULT_BOOT} "${DISK}"
           done
-          /root/update_imgs
+          /root/update_imgs "$(ip r | grep default | awk '{ print $3 }')"
         } ||
         /bin/ash