Avoids removing /

lib/ansible/modules/file.py

@@ -517,6 +517,9 @@ def execute_diff_peek(path):
 
 
 def ensure_absent(path):
+    if path == '/':
+        raise AnsibleModuleError(results={'msg': "Refusing to delete /"})
+    
     b_path = to_bytes(path, errors='surrogate_or_strict')
     prev_state = get_state(b_path)
     result = {}