Fixes #36940 - Add SecureBoot support for arbitrary operating systems…

… to "Grub2 UEFI" PXE loaders

In the course of theforeman/foreman#9864 and theforeman/smart-proxy#877,
SecureBoot support for arbitrary operating systems has been added to the
"Grub2 UEFI" PXE loaders.
This patch adds a new parameter 'bootloader_universe' to the TFTP
configuration and a directory 'host_config' inside the TFTP root
directory, that are both required by the aforementioned PRs.

manifests/init.pp

@@ -111,6 +111,8 @@
 #
 # $tftp_replace_grub2_cfg::     Determines if grub2.cfg will be replaced
 #
+# $tftp_bootloader_universe::   Directory for OS specific Network Bootstrap Programs for "Grub2 UEFI" PXE loaders
+#
 # $dhcp::                       Enable DHCP feature
 #
 # $dhcp_listen_on::             DHCP proxy to listen on https, http, or both
@@ -341,6 +343,7 @@
   Optional[Array[Stdlib::Absolutepath]] $tftp_dirs = undef,
   Optional[String] $tftp_servername = undef,
   Boolean $tftp_replace_grub2_cfg = false,
+  Optional[Stdlib::Absolutepath] $tftp_bootloader_universe = undef,
   Boolean $dhcp = false,
   Foreman_proxy::ListenOn $dhcp_listen_on = 'https',
   Boolean $dhcp_managed = true,

manifests/module/tftp.pp

@@ -8,10 +8,14 @@
 #
 # @param tftproot
 #   The root directory to use. This is required if the module is enabled.
+#
+# @param tftp_bootloader_universe
+#   Directory for OS specific Network Bootstrap Programs for "Grub2 UEFI" PXE loaders.
 class foreman_proxy::module::tftp (
   Boolean $enabled = $foreman_proxy::tftp,
   Foreman_proxy::ListenOn $listen_on = $foreman_proxy::tftp_listen_on,
   Optional[Stdlib::Absolutepath] $tftproot = $foreman_proxy::tftp_root,
+  Optional[Stdlib::Absolutepath] $tftp_bootloader_universe = $foreman_proxy::tftp_bootloader_universe,
 ) {
   if $enabled {
     assert_type(NotUndef, $tftproot)

manifests/tftp.pp

@@ -8,12 +8,13 @@
   Boolean $manage_wget = $foreman_proxy::tftp_manage_wget,
   String[1] $wget_version = $foreman_proxy::ensure_packages_version,
   Boolean $tftp_replace_grub2_cfg = $foreman_proxy::tftp_replace_grub2_cfg,
+  Optional[Stdlib::Absolutepath] $tftp_bootloader_universe = $foreman_proxy::tftp_bootloader_universe,
 ) {
   class { 'tftp':
     root => $root,
   }
 
-  $dirs = pick($directories, prefix(['pxelinux.cfg','grub','grub2','boot','ztp.cfg','poap.cfg'], "${tftp::root}/"))
+  $dirs = pick($directories, prefix(['pxelinux.cfg','grub','grub2','boot','ztp.cfg','poap.cfg', 'host_config'], "${tftp::root}/"))
 
   file { $dirs:
     ensure    => directory,

templates/tftp.yml.erb

@@ -13,3 +13,6 @@
 # Defines the default certificate action for certificate checking.
 # When false, the argument --no-check-certificate will be used.
 #:verify_server_cert: true
+
+# Directory for OS specific Network Bootstrap Programs for "Grub2 UEFI" PXE loaders
+<%= '#'  if [nil, :undefined, :undef].include?(scope.lookupvar("foreman_proxy::module::tftp::tftp_bootloader_universe")) %>:bootloader_universe: <%= scope.lookupvar("foreman_proxy::module::tftp::tftp_bootloader_universe") %>