Bug : fields of type Selection are not correctly retrieved

[Keyhaku]

Hello,

netbox.py doesn't correctly retrieve the fields which are type of "Selection" (for example the status field) , whether it is for grouping or for fetching hostvars.

netbox version used : 2.3.1

The structure of this type of field is like this

 "status": {
                "value": 1,
                "label": "Active"
            }

The problem seems to be that netbox.py retrieve only the [general] fields with the key name.

The bug is also present with custom_field of type Selection, but this time it's the key value that is fetched and thus incorrectly group by the id of the selected item.
Changing the key_map for custom_field to label fix this bug.