Don't run DHCP's default script (/usr/share/udhcpc/default.script) when getting
URL to the dot-config via DHCP. When the script was run, then the IP address
was set but not the default routes. Now just get URL via DHCP, setting IP is
done by running script /etc/init.d/network from /etc/init.d/dot-config or from
rcS.
Signed-off-by: Adam Wujek <adam.wujek@cern.ch>