Netbox Inventory: Group By Platforms (#52780)

Fixes the functionality to group_by 'platforms'. Adds the call to self.refresh_platforms_lookup
back and fixes square brackets to return a list instead of a string.

lib/ansible/plugins/inventory/netbox.py

@@ -222,7 +222,7 @@ class InventoryModule(BaseInventoryPlugin, Constructable):
 
     def extract_platform(self, host):
         try:
-            return self.platforms_lookup[host["platform"]["id"]]
+            return [self.platforms_lookup[host["platform"]["id"]]]
         except Exception:
             return
 
@@ -345,6 +345,7 @@ class InventoryModule(BaseInventoryPlugin, Constructable):
             self.refresh_tenants_lookup,
             self.refresh_racks_lookup,
             self.refresh_device_roles_lookup,
+            self.refresh_platforms_lookup,
             self.refresh_device_types_lookup,
             self.refresh_manufacturers_lookup,
         )