Fix CrawlingLogsMiddlware to use proper fingerprinter #66
Description
It should be something like: https://github.com/scrapinghub/scrapinghub-entrypoint-scrapy/pull/79/files#diff-f07996166de681330f66fa53298f81d152360ec1bd5e461f950f50130072ebd2R102-R107.
This ensures that the request fingerprints denoted in the crawling logs matches the ones found in the "Request-tab" in Scrapy Cloud.