fix

Author: FumingZhang

src/aks-preview/azext_aks_preview/tests/latest/test_aks_commands.py

@@ -16374,7 +16374,7 @@ def test_aks_bastion(self, resource_group, resource_group_location):
                 self.check("provisioningState", "Succeeded"),
             ],
         ).get_output_in_json()
-        nrg = mc.node_resource_group
+        nrg = mc["nodeResourceGroup"]
 
         # create bastion
         list_vnet_cmd = f"network vnet list -g {nrg} -o json"