Return command_line and node_directory via the controller

gns3server/compute/qemu/qemu_vm.py

@@ -1449,7 +1449,7 @@ class QemuVM(BaseNode):
         answer = {
             "project_id": self.project.id,
             "node_id": self.id,
-            "vm_directory": self.working_dir
+            "node_directory": self.working_dir
         }
         # Qemu has a long list of options. The JSON schema is the single source of information
         for field in QEMU_OBJECT_SCHEMA["required"]: