update to use new config passing method

inventory_provider/config.py

inventory_provider/tasks/worker.py

test/conftest.py

test/per_router/test_data_routes.py

test/per_router/test_poller_routes.py

test/test_celery_worker_global.py

test/test_classifier_routes.py

test/test_infinera_classifier.py

test/test_testing_routes.py