Merge branch 'develop' into feature/DBOARD3-306

Changelog.md

docs/source/protocol/poller.rst

inventory_provider/config.py

inventory_provider/routes/poller.py

inventory_provider/tasks/worker.py

test/data/mx1.ams.nl.geant.net-bgp.output

test/data/mx1.ams.nl.geant.net-bgpv4.output

test/data/mx1.ams.nl.geant.net-bgpv6.output

test/data/mx1.ams.nl.geant.net-interfaces.output

test/data/mx1.ams.nl.geant.net-netconf.xml

test/data/mx1.ams.nl.geant.net-vrr.output

test/data/mx1.ath2.gr.geant.net-bgp.output

test/data/mx1.ath2.gr.geant.net-bgpv4.output

test/data/mx1.ath2.gr.geant.net-bgpv6.output

test/data/mx1.ath2.gr.geant.net-interfaces.output

test/data/mx1.ath2.gr.geant.net-netconf.xml

test/data/mx1.ath2.gr.geant.net-vrr.output

test/data/mx1.buc.ro.geant.net-bgp.output

test/data/mx1.buc.ro.geant.net-bgpv4.output

test/data/mx1.buc.ro.geant.net-bgpv6.output