Updates and fixes for buster.

roles/tftp-netboot-installer/tasks/main.yml

@@ -1,36 +1,11 @@
-- name: add stretch-backports
-  apt_repository:
-    repo: deb http://deb.debian.org/debian/ stretch-backports main
-    state: present
-
-- name: install di-netboot-assistant from backports
+- name: install di-netboot-assistant and installer package
   apt:
     name:
       - di-netboot-assistant
-    default_release: stretch-backports
-    update_cache: yes
-
-- name: add installer package
-  apt:
-    name:
-      - debian-installer-9-netboot-amd64
-
-- name: bind mount images
-  mount:
-    path: "{{ tftp_root }}/d-i/n-pkg/"
-    src: /usr/lib/debian-installer/
-    fstype: none
-    opts: bind
-#    state: mounted   BEGINN WORKAROUND
-    state: present
-  register: fstab
-
-- file: path="{{ tftp_root }}/d-i/n-pkg/" state=directory recurse=yes
-
-- name: Reload fstab
-  command: mount -a
-  when: fstab.changed
-# https://github.com/ansible/ansible/issues/23487 END WORKAROUND
+      - "{{ di_pkg }}"
+  notify:
+    - bind mount images
+    - rebuild di-netboot-assistant menu
 
 - name: configure dnsmasq
   template: