Merge branch 'develop' into feature/DBOARD3-306

Changelog.md

README.md

inventory_provider/routes/classifier.py

inventory_provider/routes/common.py

inventory_provider/routes/poller.py

inventory_provider/tasks/data.py

inventory_provider/tasks/worker.py

requirements.txt

setup.py

test/data/check-snmp-agent-configs.py

test/data/router-info.json

test/per_router/test_poller_routes.py

test/test_classifier_routes.py

test/test_general_poller_routes.py

test/test_junos_devices_query.py

test/test_opsdb_queries.py

test/test_worker_utils.py