Allow multi-site export

[scotho3]

Having a single site is nice, but for backbones or other large interconnected networks, having a single topology showing all sites, or multiple sites would be helpful.

[bortok]

Scott, could you propose how the CLI command would look like? Also, if the sites are disconnected (two or more graphs) would that change anything in the export logic? Note, today nrx does not export standalone devices (w/o connections to other devices in the same export group).

[scotho3]

./nrx.py --sites site1,site2,site3 ... was what I had in mind.

The primary change is just making nb_site into a list named nb_sites

If they're not connected, they're not connected, I think the default behavior for standalone devices is fine, although I could make an argument for showing them.

https://github.com/scotho3/nrx - is an example.

[bortok]

Thomas, if you would create a PR, I shall be able to test it next weekend and give more feedback. Thank you for the suggestion!

[bortok]

Hi @scotho3 , would you be able to create a PR for this?

[scotho3]

Hi @bortok - sorry, I was away from my email for an extended holiday, PR has been opened.