red: Update to use ip in place of deprecated vconfig

red: Update to use ip in place of deprecated vconfig

- I noticed that the vlan package was last updated in 2005 and that the vconfig site said
   that 802.1Q VLAN code is part of the official kernel, and has been for years and
   years. It is very unlikely that you need to download anything from this site, the
   packages are left here for posterity's sake. 802.1Q VLANs can be created with the
   'ip' utility (vconfig works for vlans, but is crufty and deprecated).
- Based on this it seemed appropriate to replace the vconfig commands with ip commands.
- This patch set has been sent as an RFC PATCH as my replacement ip commands may or may
   not be correct and I am unable to test the effect as I do not have a pppoe connection
   using vlans.
- I am open to any modifications or any other decision with reagard to the vlan package

Signed-off-by: Adolf Belka <adolf.belka@ipfire.org>
Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>