[ydbd_slice] fix Namespace exception(args.confirm) on update (#13171)

ydb/tools/ydbd_slice/__init__.py

@@ -300,7 +300,11 @@ def deduce_components_from_args(args, cluster_details):
     if 'dynamic_slots' in result:
         result['dynamic_slots'] = ['all']
 
-    result['confirm'] = args.confirm
+    if hasattr(args, "confirm"):
+        confirm = args.confirm
+    else:
+        confirm = True
+    result['confirm'] = confirm
 
     logger.debug("active components is '%s'", result)
     return result
@@ -749,10 +753,17 @@ def _run(args):
 
     mode = modes.add_parser(
         "clear",
-        parents=[direct_nodes_args(), cluster_description_args(), binaries_args(), component_args(), ssh_args()],
+        parents=[
+            direct_nodes_args(),
+            cluster_description_args(),
+            binaries_args(),
+            component_args(),
+            ssh_args(),
+            with_confirmation(),
+        ],
         description="Stop all ydbd instances at the nodes, format all ydbd drives, shutdown dynamic slots. "
-                    "And don't start nodes after it. "
-                    "Use --hosts to specify particular hosts."
+        "And don't start nodes after it. "
+        "Use --hosts to specify particular hosts.",
     )
     mode.set_defaults(handler=_run)