Various fixes

- Add Debian 11 preseed
- Update Debian 11 installation files
- Fix UEFI specific paths
- Fix download URLs for memtest
- fix lint issues with newer molecule
- Fix meta, specify namespace
- Remove Debian 10 (no longer needed) and only test used distros

Change-Id: I0c901ae798994d113c8c7c0fae58536b1aa0e724
diff --git a/tasks/memtest.yml b/tasks/memtest.yml
index 06c5d80..f81a71b 100644
--- a/tasks/memtest.yml
+++ b/tasks/memtest.yml
@@ -14,8 +14,10 @@
 
 - name: Download memtest compressed ISO
   get_url:
-    url: >
-      http://memtest.org/download/{{ pxeboot_memtest_version }}/memtest86+-{{ pxeboot_memtest_version }}.iso.gz
+    url: >-
+      https://memtest.org/download/archives/{{
+      pxeboot_memtest_version }}/memtest86+-{{
+      pxeboot_memtest_version }}.iso.gz
     checksum: "{{ pxeboot_memtest_checksum }}"
     dest: "{{ pxeboot_dist_dir }}/memtest86+-{{ pxeboot_memtest_version }}.iso.gz"
     owner: "root"