Work around Kentik API limitation

gso/services/kentik_client.py

@@ -114,7 +114,8 @@ class KentikClient:
         plan_id = self.get_plan_by_name(self.config.billing_plans[device.site_tier])["id"]
         request_body = {
             "device": {
-                **device.model_dump(exclude=set("site_tier")),
+                **device.model_dump(exclude=set("device_name" "site_tier")),
+                "device_name": device.device_description,
                 "device_type": self.config.device_type,
                 "device_subtype": self.config.device_type,
                 "minimize_snmp": self.config.minimize_snmp,
@@ -128,7 +129,14 @@ class KentikClient:
             }
         }
 
-        return self._send_request("POST", "v5/device", request_body).json()
+        new_device = self._send_request("POST", "v5/device", request_body).json()
+
+        # The name of the device has to be updated from the subscription ID to its FQDN.
+        # This is a limitation of the Kentik API that disallows settings device names containing a . symbol.
+        self.update_device(new_device["device"]["id"], {"device": {"device_name": device.device_name}})
+        new_device["device"]["device_name"] = device.device_name
+
+        return new_device
 
     def update_device(self, device_id: str, updated_device: dict[str, Any]) -> dict[str, Any]:
         """Update an existing device in Kentik."""