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/meta/main.yml b/meta/main.yml
index d5216e7..888678f 100644
--- a/meta/main.yml
+++ b/meta/main.yml
@@ -6,6 +6,7 @@
 
 galaxy_info:
   role_name: pxeboot
+  namespace: onf
 
   author: Open Networking Foundation
   description: Configures a webserver with iPXE related boot scripts and images