refactor: 25.04 is not an Ubuntu LTS release (#15)

* feat: 25.04 is not an Ubuntu LTS release

* doc: removed LTS from Ubuntu 25.04

builds/linux/ubuntu/25-04/data/network.pkrtpl.hcl

@@ -0,0 +1,19 @@
+  network:
+    network:
+      version: 2
+      ethernets:
+%{ if ip != null ~}
+        ${device}:
+          dhcp4: false
+          addresses:
+            - ${ip}/${netmask}
+          gateway4: ${gateway}
+          nameservers:
+            addresses:
+%{ for item in dns ~}
+              - ${item}
+%{ endfor ~}
+%{ else ~}
+        ${device}:
+          dhcp4: true
+%{ endif ~}

builds/linux/ubuntu/25-04/data/storage.pkrtpl.hcl

@@ -0,0 +1,113 @@
+%{~ if length(partitions) == 1 && partitions[0].name == "autopart" ~}
+    %{~ if partitions[0].format.fstype == "lvm" ~}
+  storage:
+    layout:
+      name: lvm
+    %{~ endif ~}
+    %{~ if partitions[0].format.fstype == "simple" ~}
+  storage:
+    layout:
+      name: direct
+    %{~ endif ~}
+    %{~ if partitions[0].format.fstype == "" ~}
+  storage:
+    layout:
+      name: direct
+    %{~ endif ~}
+%{~ else ~}
+  storage:
+    config:
+      - ptable: gpt
+        path: /dev/${device}
+        wipe: superblock
+        preserve: false
+%{ if vm_bios == "seabios" ~}
+        grub_device: true
+%{ endif ~}
+        type: disk
+        id: disk-${device}
+%{if vm_bios == "seabios" ~}
+      - device: disk-${device}
+        size: 1M
+        flag: bios_grub
+        number: 1
+        preserve: false
+        type: partition
+        id: partition-grub
+%{ endif ~}
+
+%{ for index, partition in partitions ~}
+      - device: disk-${device}
+%{ if partition.size != -1 ~}
+        size: ${partition.size}M
+%{ else ~}
+        size: ${partition.size}
+%{ endif ~}
+        wipe: superblock
+        preserve: false
+%{ if partition.mount.path == "/boot" && vm_bios == "seabios" && index == 0 ~}
+        flag: bios_grub
+        grub_device: false
+%{ endif ~}
+%{ if partition.mount.path == "/boot/efi" && index == 0 ~}
+        flag: boot
+        grub_device: true
+%{ endif ~}
+        type: partition
+        id: partition-${partition.name}
+%{ if partition.format.fstype != "" ~}
+      - id: format-${partition.name}
+        type: format
+        volume: partition-${partition.name}
+        label: ${partition.format.label}
+        fstype: ${partition.format.fstype}
+%{ endif ~}
+%{ if partition.volume_group == "" && partition.name != "bios_grub" ~}
+      - id: mount-${partition.name}
+        type: mount
+%{ if partition.mount.path == "" ~}
+        path: none
+%{ else ~}
+        path: ${partition.mount.path}
+%{ endif ~}
+        device: format-${partition.name}
+%{ if partition.mount.options != "" ~}
+        options: ${partition.mount.options}
+%{ endif ~}
+%{ endif ~}
+%{ endfor ~}
+%{ for index, volume_group in lvm ~}
+      - id: volgroup-${volume_group.name}
+        type: lvm_volgroup
+        name: ${volume_group.name}
+        devices:
+%{ for index, partition in partitions ~}
+%{ if lookup(partition, "volume_group", "") == volume_group.name ~}
+          - partition-${partition.name}
+%{ endif ~}
+%{ endfor ~}
+%{ for index, partition in volume_group.partitions ~}
+      - id: partition-${partition.name}
+        type: lvm_partition
+        name: ${partition.name}
+        size: ${partition.size}M
+        volgroup: volgroup-${volume_group.name}
+      - id: format-${partition.name}
+        type: format
+        volume: partition-${partition.name}
+        label: ${partition.format.label}
+        fstype: ${partition.format.fstype}
+      - id: mount-${partition.name}
+        type: mount
+%{ if partition.mount.path == "" ~}
+        path: none
+%{ else ~}
+        path: ${partition.mount.path}
+%{ endif ~}
+        device: format-${partition.name}
+%{ if partition.mount.options != "" ~}
+        options: ${partition.mount.options}
+%{ endif ~}
+%{ endfor ~}
+%{ endfor ~}
+%{~ endif ~}

builds/linux/ubuntu/25-04/data/user-data.pkrtpl.hcl

@@ -0,0 +1,29 @@
+#cloud-config
+autoinstall:
+  version: 1
+  early-commands:
+    - sudo systemctl stop ssh
+  locale: ${vm_os_language}
+  keyboard:
+    layout: ${vm_os_keyboard}
+${storage}
+${network}
+  identity:
+    hostname: ubuntu-server
+    username: ${build_username}
+    password: ${build_password_encrypted}
+  ssh:
+    install-server: true
+    allow-pw: true
+  packages:
+    - openssh-server
+    - cloud-init
+  user-data:
+    disable_root: false
+    timezone: ${vm_os_timezone}
+  late-commands:
+    - sed -i -e 's/^#\?PasswordAuthentication.*/PasswordAuthentication yes/g' /target/etc/ssh/sshd_config
+    - echo '${build_username} ALL=(ALL) NOPASSWD:ALL' > /target/etc/sudoers.d/${build_username}
+    - curtin in-target --target=/target -- chmod 440 /etc/sudoers.d/${build_username}
+    - curtin in-target -- apt-get update
+    - curtin in-target -- apt-get install -y qemu-guest-agent