Deployment Visualizer should have an option to only show hardware containers and their connections

[AWatk]

it would be useful if rosmod's deployment visualizer could also show a higher level deployment graphic with only the hardware containers and their directional connections. From there it would be easy for the user to upload an svg for each container to quickly generate system architecture graphics like this one

[AWatk]

Directionality between containers would be determined by looking at pub/sub server/client setups in order to omit the messages entirely.