netinfo: Move 'dhcp4' parameters to the end in helper functions

Change-Id: I593919713cd0966675bd493fc116483a77e4554b
Signed-off-by: Ondřej Svoboda <osvoboda@redhat.com>
Reviewed-on: http://gerrit.ovirt.org/36036
Reviewed-by: Ido Barkan <ibarkan@redhat.com>
Reviewed-by: Dan Kenigsberg <danken@redhat.com>