backgrund image path

basename
 fix redundancy

tasks/main.yml

@@ -60,7 +60,7 @@
 - name: background image
   copy:
     src: "{{display_manager_background_image}}"
-    dest: "/usr/share/lightdm/background/{{display_manager_background_image}}"
+    dest: "{{ display_manager_background_image_path }}"
 
 - name: lightdm started
   service:

vars/main.yml

@@ -2,4 +2,4 @@ _display_manager_valid_states:
   - multiuser
   - maintenance
 
-display_manager_background_image_path: /usr/share/lightdm/background/{{display_manager_background_image}}
+display_manager_background_image_path: /usr/share/lightdm/background/{{display_manager_background_image|basename}}