Related change in IM: https://osm.etsi.org/gerrit/#/c/osm/IM/+/11212/

Adds descriptors for the firewall
Updates Virtual PC to use two networks and adds more actions

Signed-off-by: beierlm <mark.beierl@canonical.com>

Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>