Prune dangle image periodically (#14957)

Prune dangle image periodically

pairs with ansible/ansible-runner#1342

this fix the problem of us forcefully remove images when setting changing ee image that's being used in a job causing the job to fail

Author: TheRealHaoLiu

awx/main/tasks/system.py

@@ -417,7 +417,7 @@ def handle_removed_image(remove_images=None):
 
 @task(queue=get_task_queuename)
 def cleanup_images_and_files():
-    _cleanup_images_and_files()
+    _cleanup_images_and_files(image_prune=True)
 
 
 @task(queue=get_task_queuename)