Unit test was broken, gotta foce this to be a str otherwise string formatting fails later

src/yunohost/settings.py

@@ -116,7 +116,7 @@ def settings_set(key, value):
     elif key_type == "enum":
         if value not in settings[key]["choices"]:
             raise YunohostError('global_settings_bad_choice_for_enum', setting=key,
-                                choice=value,
+                                choice=str(value),
                                 available_choices=", ".join(settings[key]["choices"]))
     else:
         raise YunohostError('global_settings_unknown_type', setting=key,