cleanup_loggers after supervisor unittests
cleanup_loggers after supervisor unittests


Former-commit-id: ef0ea1575c83075b9f4dd125e86539831c81a811 [formerly 5592d299948fed9ea34d9bb921f85fd1b9c1f7ed]
Former-commit-id: 6b36b1b8c1ea08ebadcc38f0f867a72b6c75c14d
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine