- Make sure wicked is part of the oem and netboot image
  descriptions starting with openSUSE 13.2 and SLE12
- Make sure ip command is part of the oem and netboot image
  descriptions starting with openSUSE 13.2 and SLE12. Instead
  ifconfig is no longer part of these descriptions
- Fixed setupNetworkWicked
  Use bin/wickedd-dhcp4 instead of the mainstream wicked program
  wicked relies on dbus which is not helpful within an initrd
  environment. Fortunately there is the wickedd-dhcp4 helper which
  just asks for the lease from the DHCP. The setup of the network
  interface and routing is then done by setupNetworkWicked but will
  change in the future if wicked becomes more mature