[PECO-2051] Add custom auth headers into cloud fetch request (#460)

Signed-off-by: Jacky Hu <[email protected]>

src/databricks/sql/cloudfetch/downloader.py

@@ -100,6 +100,7 @@ def run(self) -> DownloadedFile:
                 self.link.fileLink,
                 timeout=self.settings.download_timeout,
                 verify=self._ssl_options.tls_verify,
+                headers=self.link.httpHeaders
                 # TODO: Pass cert from `self._ssl_options`
             )
             response.raise_for_status()