Add support for stretch

apt-repositories/files/stretch_backports_preferences

@@ -0,0 +1,3 @@
+Package: *
+Pin: release a=stretch-backports
+Pin-Priority: 50

apt-repositories/tasks/main.yml

@@ -2,12 +2,23 @@
 
 - name: Backports sources list is installed
   template:
-    src: backports.list.j2
+    src: jessie_backports.list.j2
     dest: /etc/apt/sources.list.d/backports.list
     force: yes
     backup: yes
     mode: 0640
   notify: apt update
+  when: ansible_distribution_major_version == '8'
+
+- name: Backports sources list is installed
+  template:
+    src: stretch_backports.list.j2
+    dest: /etc/apt/sources.list.d/backports.list
+    force: yes
+    backup: yes
+    mode: 0640
+  notify: apt update
+  when: ansible_distribution_major_version == '9'
 
 - name: Backports configuration
   copy:
@@ -17,5 +28,16 @@
     backup: yes
     mode: 0640
   notify: apt update
+  when: ansible_distribution_major_version == '8'
+
+- name: Backports configuration
+  copy:
+    src: stretch_backports_preferences
+    dest: /etc/apt/preferences.d/backports
+    force: yes
+    backup: yes
+    mode: 0640
+  notify: apt update
+  when: ansible_distribution_major_version == '9'
 
 - meta: flush_handlers

apt-repositories/templates/stretch_backports.list.j2

@@ -0,0 +1 @@
+deb http://mirror.evolix.org/debian stretch-backports {{ apt_repositories_components | mandatory }}