Support switch

[tobiasduerschmid]

nodes with switch conditions:
pipenv run rosdiscover recover ./experiments/recovery/subjects/autoware/experiment.yml pos_db pos_downloader
pipenv run rosdiscover recover ./experiments/recovery/subjects/autoware/experiment.yml tablet_socket tablet_receiver
pipenv run rosdiscover recover ./experiments/recovery/subjects/autoware/experiment.yml lane_planner lane_stop