Merge ~xubuntu-dev/ubuntu-cdimage:xubuntu-core into ubuntu-cdimage:main

[Sean Davis]

Add Xubuntu Minimal

Some history:
- https://xubuntu.org/news/introducing-xubuntu-core/
- https://github.com/Xubuntu/xubuntu-development/issues/1

Announced in 2015 and supported by our community members since, Xubuntu Minimal is a trimmed down version of Xubuntu that fits on smaller installation media.

The Xubuntu Team would very much like to have official images published for Xubuntu Minimal starting with the 23.04 cycle.

Related Merge Requests:
- debian-cd: https://code.launchpad.net/~xubuntu-dev/debian-cd/+git/debian-cd/+merge/435314
- livecd-rootfs: https://code.launchpad.net/~xubuntu-dev/livecd-rootfs/+git/livecd-rootfs/+merge/435315

[Steve Langasek (vorlon)]

review: Needs Fixing

[Sean Davis (bluesabre)]

Applied some updates, responded to the releases page question.

[Steve Langasek (vorlon)]

definitely getting closer.

review: Needs Fixing

[Sean Davis (bluesabre)]

Thanks for the feedback! Applied the requested fixes.

[Steve Langasek (vorlon)]

review: Approve

diff --git a/etc/crontab b/etc/crontab
index 58cff5a..0bbaa92 100644
--- a/etc/crontab
+++ b/etc/crontab
@@ -54,7 +54,7 @@ PATH=/srv/cdimage.ubuntu.com/bin:/usr/sbin:/usr/bin:/sbin:/bin
 41 7 * * *	for-project ubuntu cron.daily-live --live; SUBPROJECT=desktop-preinstalled for-project ubuntu cron.daily-preinstalled --live
 41 8 * * *	SUBPROJECT=legacy for-project ubuntu cron.daily-legacy --live
 24 5 * * *	for-project kubuntu cron.daily-live --live
-40 1 * * *	for-project xubuntu cron.daily-live --live
+40 1 * * *	for-project xubuntu cron.daily-live --live; SUBPROJECT=minimal for-project xubuntu cron.daily-live --live
 10 3 * * *	for-project ubuntu-server cron.daily-preinstalled --live; SUBPROJECT=live for-project ubuntu-server cron.daily-live --live
 27 18 * * *	for-project ubuntustudio cron.dvd --live
 39 16 * * *	for-project lubuntu cron.daily-live --live
diff --git a/etc/livefs-launchpad b/etc/livefs-launchpad
index d4fced2..0a5e2a6 100644
--- a/etc/livefs-launchpad
+++ b/etc/livefs-launchpad
@@ -8,6 +8,7 @@ ubuntu-canary			daily-live		*		disco-		ubuntu-cdimage/ubuntu-canary
 ubuntu-desktop-preinstalled daily-preinstalled	focal-		*		ubuntu-cdimage/ubuntu-preinstalled
 kubuntu			daily-live		*		*		ubuntu-cdimage/kubuntu
 xubuntu			daily-live		*		*		ubuntu-cdimage/xubuntu
+xubuntu-minimal			daily-live		lunar-		*		ubuntu-cdimage/xubuntu-minimal
 ubuntu-server		daily			trusty-		*		ubuntu-cdimage/ubuntu-server
 ubuntu-server		daily-preinstalled	xenial-		*		ubuntu-cdimage/cpc
 ubuntu-server-live	daily-live		bionic-		*		ubuntu-cdimage/ubuntu-server-live
diff --git a/etc/qa-products b/etc/qa-products
index ea32841..eb93720 100644
--- a/etc/qa-products
+++ b/etc/qa-products
@@ -119,6 +119,7 @@ Ubuntu Unity Desktop amd64					ubuntu-unity	daily-live			desktop					amd64			iso
 # Xubuntu
 Xubuntu Desktop amd64						xubuntu			daily-live			desktop					amd64			iso
 Xubuntu Desktop i386						xubuntu			daily-live			desktop					i386			iso
+Xubuntu Minimal amd64						xubuntu			daily-live			minimal					amd64			iso
 
 # Ubuntu WSL (special case, not built via cdimage)
 Ubuntu WSL									ubuntu			wsl					desktop					amd64			iso