Add URM as Fiber Optic Port Type

[sklemer1]

Add 'URM' as Port Type for fiber ports.

URM is a German standard according to DIN SPEC 40032:2013-10 and compareable to MPO in sense of density.

Compare:
https://www.beuth.de/de/technische-regel/din-spec-40032/190360639
https://de.wikipedia.org/wiki/LWL-Steckverbinder#URM

Taken from netbox-community/netbox#7052

[glennmatthews]

Is it desirable to distinguish between URM-P2, URM-P4, URM-P8 port types? Compare to netbox-community/netbox#7052

[sklemer1]

We thought about P2 to P8. The neat thing with URM is that you can plug 4 P2 plugs in a P8 socket. But as this can't be modelled in a sensible way in nautobot/netbox we came to the conclusion to model everything only with P2 types and do the outlet naming to reflect that it is a P8 one. Netbox did the same thing with MPO where there are also different kinds of outlets.

That said: I would vote for staying compatible with netbox so I'll change the PR to reflect the netbox change.

[andrexp]

Afaik there are only 2 types of URM. URM-P2 and P8 for patch-cables and URM-K8 and K2 for patchpanels. The best way should be implementing URM-2 and URM-8 so it can be used as patchpanel and patch-cable type.

[glennmatthews]

We're willing to merge this as it currently stands once it's updated to pass linting.

[sklemer1]

Awesome; thanks.