Switch to usual for DIB way of NIC setup

Use "dhcp-all-interfaces" DIB element to configure NICs. And remove
custom scripts used before.

Change-Id: I7ed93b669b103106f65ad9112f9aada131881525

centos-bareon/element-deps

@@ -1,2 +1,3 @@
 package-installs
-
+centos-minimal
+dhcp-all-interfaces

centos-bareon/install.d/90-remove-all-network-dev-configs

@@ -0,0 +1,16 @@
+#!/bin/bash
+
+if [ "${DIB_DEBUG_TRACE:-0}" -gt 0 ]; then
+    set -x
+fi
+set -eu
+set -o pipefail
+
+echo "Remove all prepared network device configuration(centos-minimall have"
+echo "added couple of them). We can't predefine netowrk setup during image"
+echo "build."
+for iface in /etc/sysconfig/network-scripts/ifcfg-*; do
+    [ ! -e "$iface" ] && break
+    [ "$(basename "$iface")" = "ifcfg-lo" ] && continue
+    rm -v "$iface"
+done

centos-bareon/package-installs.yaml

@@ -1,5 +1,4 @@
 curl:
-dhclient:
 policycoreutils:
 selinux-policy:
 selinux-policy-targeted:
@@ -19,4 +18,3 @@ btrfs-progs:
 dosfstools:
 rsync:
 grub2:
-

centos-bareon/post-install.d/10-disable-udev-iface-rename

@@ -1,24 +0,0 @@
-#!/bin/bash
-
-if [ ${DIB_DEBUG_TRACE:-1} -gt 0 ]; then
-    set -x
-fi
-
-set -e
-
-# Disabling this rule prevents inconsistent iface renames done by udev. This
-# were conflicting with prebuilt dhcp scripts (ifcfg-eth0, ifcfg-eth1) as well
-# as with dhcp-all-interfaces which was not able to generate scripts according
-# to new names (because it runs concurrently with renaming).
-# Using old schema (ethN) + pre-built dhcp scripts allows to have stable DHCP
-# even if eth interfaces are randomly swapped.
-ln -s /dev/null /etc/udev/rules.d/80-net-name-slot.rules
-
-# Configs for additional interfaces
-SYSCONFIG_PATH=/etc/sysconfig/network-scripts
-for IFACE_NUM in 1 2 3
-do
-    cp $SYSCONFIG_PATH/ifcfg-eth0 $SYSCONFIG_PATH/ifcfg-eth$IFACE_NUM
-    sed -i "s/eth0/eth$IFACE_NUM/g" $SYSCONFIG_PATH/ifcfg-eth$IFACE_NUM
-done
-