Downgrade to Ubuntu 18.04 (#4759)
Downgrade to Ubuntu 18.04 (#4759)

Co-authored-by: Dubravko Sever <ed3adde665d0c9562d773d26a97b727d1067838a@pan-net.eu>
rackerlabs/django-DefectDojo,rackerlabs/django-DefectDojo,rackerlabs/django-DefectDojo,rackerlabs/django-DefectDojo