removed opsdb relliant code and moved IMS code out of dedicated files

inventory_provider/__init__.py

inventory_provider/db/db.py

inventory_provider/db/opsdb.py

inventory_provider/routes/classifier.py

inventory_provider/routes/data.py

inventory_provider/routes/ims_classifier.py

inventory_provider/routes/ims_data.py

inventory_provider/routes/ims_jobs.py

inventory_provider/routes/ims_lg.py

inventory_provider/routes/ims_otrs.py

inventory_provider/routes/lg.py

inventory_provider/routes/msr.py

inventory_provider/routes/testing.py

inventory_provider/tasks/data.py

inventory_provider/tasks/ims_worker.py

inventory_provider/tasks/worker.py

test/conftest.py

test/data/router-info.json

test/per_router/test_data_routes.py

test/test_celery_worker_global.py