Prep for Ubuntu 23.04

roles/netbootxyz/defaults/main.yml

@@ -611,6 +611,8 @@ releases:
     mirror: http://archive.ubuntu.com
     name: Ubuntu
     versions:
+    - code_name: lunar
+      name: 23.04 Lunar Lobster
     - code_name: kinetic
       name: 22.10 Kinetic Kudu
     - code_name: jammy

roles/netbootxyz/templates/menu/ubuntu.ipxe.j2

@@ -28,6 +28,7 @@ iseq ${ubuntu_version} older_release && goto older_release ||
 iseq ${ubuntu_version} focal && set install_type sub ||
 iseq ${ubuntu_version} jammy && set install_type sub ||
 iseq ${ubuntu_version} kinetic && set install_type sub ||
+iseq ${ubuntu_version} lunar && set install_type sub ||
 iseq ${ubuntu_version} focal-legacy && set ubuntu_version focal ||
 iseq ${install_type} sub && goto boot_type ||
 iseq ${os_arch} arm64 && echo "arm64 not supported on legacy network installs, please use 20.04 Subiquity and up" && sleep 5 && goto ubuntu ||