RO Dockerfile: changes in the installed packages

New package 'python3-osm-ro-plugin' base for plugins
New plugin 'python3-osm-rosdn-dpb'

Rename from python3-osm-rosdn-tapi to python3-osm-rosdn-ietfl2vpn
Rename from python3-osm-rosdn-arista to python3-osm-rosdn-arista-cloudvision

Change-Id: Iaa51fab7f67bb96d33ef74e9ff9759d954a43145
Signed-off-by: tierno <alfonso.tiernosepulveda@telefonica.com>