refactor

brian_polling_manager/interface_stats/brian.py

brian_polling_manager/interface_stats/cli.py

brian_polling_manager/interface_stats/click_helpers.py

brian_polling_manager/interface_stats/config-example.json

brian_polling_manager/interface_stats/errors.py

brian_polling_manager/interface_stats/services/netconf.py

brian_polling_manager/interface_stats/services/writers.py

brian_polling_manager/interface_stats/vendors/__init__.py

brian_polling_manager/interface_stats/vendors/juniper.py

brian_polling_manager/interface_stats/vendors/netconf.py

test/data/interface-info-snapshots/capture-test-data.py

test/interface_stats/conftest.py

test/interface_stats/data/capture-test-data.py

...erface_stats/data/mx1.ams.nl.geant.net-interface-info.xml

...rface_stats/data/mx1.ath2.gr.geant.net-interface-info.xml

...erface_stats/data/mx1.buc.ro.geant.net-interface-info.xml

...erface_stats/data/mx1.bud.hu.geant.net-interface-info.xml

...erface_stats/data/mx1.dub.ie.geant.net-interface-info.xml

...erface_stats/data/mx1.gen.ch.geant.net-interface-info.xml

...erface_stats/data/mx1.lon.uk.geant.net-interface-info.xml