cleanup_loggers after supervisor unittests
cleanup_loggers after supervisor unittests


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Former-commit-id: 6b36b1b8c1ea08ebadcc38f0f867a72b6c75c14d
Former-commit-id: 9ed672dfa57d8b23fb89b9a40e815392a421fcb1
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine