Revert "Switch to cloud-init for host initialization"

This reverts commit 5f7d47783b.
This reverts commit 33c62d0c42.

modules/host/templates/boothook.sh.tpl

@@ -1,5 +0,0 @@
-#!/bin/sh
-#cloud-boothook
-
-# Fix hostname after reboot
-hostnamectl hostname "${hostname}"

modules/host/templates/userdata.yaml.tpl

@@ -1,45 +0,0 @@
-#cloud-config
-write_files:
-
-# Configure private network
-- content: |
-    BOOTPROTO='dhcp'
-    STARTMODE='auto'
-  path: /etc/sysconfig/network/ifcfg-eth1
-
-# Disable ssh password authentication
-- content: |
-    PasswordAuthentication no
-    X11Forwarding no
-    MaxAuthTries 2
-    AllowTcpForwarding no
-    AllowAgentForwarding no
-    AuthorizedKeysFile .ssh/authorized_keys
-  path: /etc/ssh/sshd_config.d/kube-hetzner.conf
-
-# Setting the right reboot mode
-- content: | 
-    REBOOT_METHOD=kured
-  path: /etc/transactional-update.conf
-  append: true
-
-# Add ssh authorized keys
-ssh_authorized_keys:
-%{ for key in sshAuthorizedKeys ~}
-  - ${key}
-%{ endfor ~}
-
-runcmd:
-
-# Activate the private network
-- systemctl reload network
-
-# Activate ssh configuration
-- systemctl reload sshd
-
-# Fix hostname (during first boot)
-- hostnamectl hostname ${hostname}
-
-# Finishing automatic reboot via Kured setup
-- systemctl reload transactional-update
-- rebootmgrctl set-strategy off