Adjust test_tools to working with a `queen` plugin.

Michał Kudelarequested to merge
kudmich/handle/api_mode_notification into master

Adjust test_tools to working with a queen plugin.

  1. handle api mode notification
  2. add to node config class queen plugin parameters

Needed by hive!1422 (merged)

Edited by Andrzej Lisak

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