Count the actual number of http requests to NetBox instead of retried requests

[d-honeybadger]

Since http requests to NetBox use an http client with retries, the actual number of http requests can be bigger than the number of client.Do() invocations. This is relevant for

• rate-limiting
• metrics collection

Instead of on every httpClient.Do(), waiting (for rate-limiting) and incrementing total number of requests should happen in RequestLogHook.