Add Ubuntu 20.10 net install

Splits logic into older debian style and newer subiquity
installers.

Currently 20.10 uses subiquity, may be able to switch 20.04 to that
as well.  Build automation extracts and hosts the casper kernels
since upstream does not provide them hosted.  Once the kernels are
loading the latest daily live image is retrieved and loaded during
the init process.

Auto installs are also handled differently so the normal preseeds
won't work with the subiquity installer.

roles/netbootxyz/defaults/main.yml

@@ -515,6 +515,8 @@ releases:
     mirror: http://archive.ubuntu.com
     name: Ubuntu
     versions:
+    - code_name: groovy
+      name: 20.10 Groovy Gorilla
     - code_name: focal
       name: 20.04 LTS Focal Fossa
     - code_name: bionic

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

@@ -8,6 +8,9 @@ goto ${menu}
 :ubuntu
 set os Ubuntu
 clear ubuntu_version
+clear install_type
+clear older_release
+set install_type deb
 menu ${os} - ${arch_a}
 item --gap Latest Releases
 {% for item in releases.ubuntu.versions %}
@@ -17,6 +20,8 @@ item --gap Older Releases
 item older_release ${space} Set release codename...
 choose ubuntu_version || goto ubuntu_exit
 iseq ${ubuntu_version} older_release && goto older_release ||
+iseq ${ubuntu_version} groovy && set install_type sub ||
+iseq ${boot_type} sub && goto boot_type ||
 goto mirrorcfg
 
 :older_release
@@ -26,39 +31,39 @@ echo Setting mirror to ${ubuntu_mirror}
 clear ubuntu_version
 echo -n Please set enter code name of release: ${} && read ubuntu_version
 set dir ${ubuntu_base_dir}/dists/${ubuntu_version}-updates/main/installer-${arch_a}/current/images/netboot/
-goto deb_boot_type
+goto boot_type
 
 :mirrorcfg
 set mirrorcfg mirror/suite=${ubuntu_version}
 set dir ${ubuntu_base_dir}/dists/${ubuntu_version}-updates/main/installer-${arch_a}/current/images/netboot/
-iseq ${ubuntu_version} groovy && set dir ${ubuntu_base_dir}/dists/${ubuntu_version}/main/installer-${arch_a}/current/legacy-images/netboot/ ||
 
-:deb_boot_type
+:boot_type
 menu ${os} [${ubuntu_version}] Installer
 item --gap Install types
 item install ${space} Install
 item rescue ${space} Rescue Mode
-item expert ${space} Expert Install
-item preseed ${space} Specify preseed url...
+item automated ${space} Specify preseed/autoinstall url...
 choose --default ${type} type || goto ubuntu
 echo ${cls}
 goto deb_${type}
 
 :deb_rescue
-set install_params rescue/enable=true
-goto deb_boot
+iseq ${install_type} deb && set install_params rescue/enable=true ||
+iseq ${install_type} sub && set install_params systemd.unit=rescue.target ||
+goto deb_install
 
-:deb_expert
-set install_params priority=low
-goto deb_boot
-
-:deb_preseed
-echo -n Specify preseed URL for ${os} ${ubuntu_version}: && read preseedurl
-set install_params auto=true priority=critical preseed/url=${preseedurl}
-goto deb_boot
+:deb_automated
+echo -n Specify preseed/autoinstall URL for ${os} ${ubuntu_version}: && read autoinstall
+iseq ${install_type} deb && set install_params auto=true priority=critical preseed/url=${autoinstall} ||
+iseq ${install_type} sub && set install_params autoinstall ds=nocloud-net;s=${autoinstall} ||
+goto deb_install
 
 :deb_install
+iseq ${install_type} deb && goto deb_boot ||
+iseq ${install_type} sub && goto ${ubuntu_version} ||
+
 :deb_boot
+echo Loading Ubuntu PXE netboot installer
 set dir ${dir}${menu}-installer/${arch_a}
 imgfree
 kernel ${ubuntu_mirror}/${dir}/linux ${install_params} ${mirrorcfg} -- quiet ${params} initrd=initrd.gz ${cmdline}
@@ -68,6 +73,30 @@ echo MD5sums:
 md5sum linux initrd.gz
 boot
 
+{% for key, value in endpoints.items() | sort %}
+{% if value.os == "ubuntu" and 'netboot' in key %}
+{% set kernel_name = value.kernel %}
+:{{ value.codename }}
+{% for key, value in endpoints.items() | sort %}
+{% if key == kernel_name %}
+set kernel_url ${live_endpoint}{{ value.path }}
+set codename {{ value.codename }}
+{% endif %}
+{% endfor %}
+goto sub_boot
+{% endif %}
+{% endfor %}
+
+:sub_boot
+imgfree
+echo Loading Ubuntu Subiquity Network Installer...
+kernel ${kernel_url}vmlinuz root=/dev/ram0 ramdisk_size=1500000 initrd=initrd ip=dhcp url=http://cdimage.ubuntu.com/ubuntu-server/daily-live/current/${codename}-live-server-${arch_a}.iso
+initrd ${kernel_url}initrd
+echo
+echo MD5sums:
+md5sum vmlinuz initrd
+boot
+
 :ubuntu_exit
 clear menu
 exit 0