Seed specific Fedora network configuration

When building seed images on Fedora we want to disable
the normal network interface naming conventions and just
go with eth0.

Change-Id: I8551af2d28327a36c5d21007a88057c14b7f9e2e

elements/seed-stack-config/install.d/02-seed-stack-fedora

@@ -0,0 +1,21 @@
+#!/bin/bash
+set -ex
+
+# create softlink to /dev/null which disables the net-name-slot rules
+# which rename eth0 -> em1, etc. We don't want to do this on the
+# seed VM
+if [ -d /etc/udev/rules.d/ ]; then
+    ln -sf /dev/null /etc/udev/rules.d/80-net-name-slot.rules
+fi
+
+if [ -d /etc/sysconfig/network-scripts ]; then
+
+    # enable DHCP on eth0 for the seed
+    cat > /etc/sysconfig/network-scripts/ifcfg-eth0 <<EOF_CAT
+DEVICE="eth0"
+BOOTPROTO="dhcp"
+ONBOOT="yes"
+TYPE="Ethernet"
+EOF_CAT
+
+fi