Add the ability to set VNI ranges in Fabric and Multisite

[peter8498]

Which role would this new feature be associated?

cisco.nac_dc_vxlan.dtc.create

New feature description:

We want to add the ability to set the VNI ranges on the fabric settings for VXLAN fabrics and for multisite. Currently on the resource tab (General tab for federated) of the VXLAN fabric you have these two fields in the GUI: 
- Layer 2 VXLAN VNI Range
- Layer 3 VXLAN VNI Range
They are both mandatory and default to 30000-490000 and 50000-590000 respectivley.
Add them to the data model for both multisite and VXLAN and add default values in the default files.
Add support to set these in the jinja templates used in the common role.

Would this be a new feature requiring a new role?

No new role. Update common and jinja templates only

Which section of the data model is the new feature related?

vxlan.fabric

Would this be a new feature requiring a new addition to the data model?

Yes. As above

New or Affected Documentation for New Feature

Yes. Updated data model

Potential Ansible Task Config

Jinja template updates only needed here

Ansible Version

Ansible Collection Versions

Cisco NDFC Version

12.2.2

Cisco NX-OS Version

[mthurstocisco]

fixed here #361