Support Netbox 3

[CllaudiaB]

• update dependencies
• replace device_role with role for Netbox 3.6 : Inconsistency in API for field role/device netbox-community/netbox#6391
• new cabling models from Netbox 3.3: Extend the cable model to support multiple terminations netbox-community/netbox#9102

[ribetm]

Fixes #303 and #240 (superseding #277)
Maybe #275 as a side effect

[c0ff3e]

Happy to see some life here,
how can i assist ?
there is some other MR thats would be nice to include in the same time.

[ribetm]

Happy to see some life here, how can i assist ? there is some other MR thats would be nice to include in the same time.

Which MRs are you thinking of ? Maybe we could have them separated, unless these are linked to Netbox 3 compatibility ?

Let's merge this so the others can be rebased and tested directly

[c0ff3e]

Happy to see some life here, how can i assist ? there is some other MR thats would be nice to include in the same time.

Which MRs are you thinking of ? Maybe we could have them separated, unless these are linked to Netbox 3 compatibility ?

Let's merge this so the others can be rebased and tested directly
#292
#293

there where some others i used also. will update when i find them.