feat: Add support for tunnel name in netbox_utils.py

This commit adds support for the "tunnel" attribute in the `netbox_utils.py` file. The attribute is used to query the "name" field for tunnels in NetBox. This change ensures that the correct attribute is used when interacting with tunnels.

Author: richbibby

plugins/module_utils/netbox_utils.py

@@ -204,6 +204,7 @@
     site_group="slug",
     tenant="slug",
     tenant_group="slug",
+    tunnel="name",
     time_zone="timezone",
     virtual_chassis="name",
     virtual_machine="name",

plugins/modules/netbox_tunnel.py

@@ -41,7 +41,7 @@
         type: raw
       tunnel_group:
         description:
-          - The VLAN group the VLAN will be associated to
+          - The Tunnel group the VLAN will be associated with. Must exist in NetBox
         required: false
         type: raw
       encapsulation: