Update example templates to modern distros

Replace CoreOS (EOL) with Flatcar Linux using Ignition v3.
Replace CentOS (EOL) with AlmaLinux using a kickstart template.
Update Ubuntu templates to jammy with current archive mirror paths.
Update Debian template to bookworm.
Drop CoreOS cloud-config; add Flatcar Ignition example.
Update mappings.yaml, test configs, fixtures, and smoke test accordingly.

1 files changed, 30 insertions, 0 deletions

diff --git a/configs/data-dir/preseed/ubuntu.preseed.slc b/configs/data-dir/preseed/ubuntu.preseed.slc
new file mode 100644
index 0000000..128622c
--- /dev/null
+++ b/configs/data-dir/preseed/ubuntu.preseed.slc
@@ -0,0 +1,30 @@
+{{define "preseeds/ubuntu" -}}
+{{template "preseeds/common"}}
+
+d-i partman-auto/method string regular
+d-i partman-lvm/device_remove_lvm boolean true
+d-i partman-md/device_remove_md boolean true
+d-i partman-lvm/confirm boolean true
+d-i partman-lvm/confirm_nooverwrite boolean true
+
+d-i partman-auto/choose_recipe select atomic
+
+d-i partman-partitioning/confirm_write_new_label boolean true
+d-i partman/choose_partition select finish
+d-i partman/confirm boolean true
+d-i partman/confirm_nooverwrite boolean true
+
+d-i base-installer/install-recommends boolean true
+
+d-i clock-setup/utc boolean true
+d-i time/zone string UTC
+
+d-i clock-setup/ntp boolean true
+
+d-i pkgsel/update-policy select unattended-upgrades
+
+d-i grub-installer/timeout string 5
+d-i popularity-contest/participate boolean false
+
+d-i finish-install/reboot_in_progress note
+{{end}}