pass size to upload_fobj (#6187)

This allows us to select between chunked and non-chunked uploading
in Webdav, and hopefully in the http itself.

setup.py

@@ -106,7 +106,7 @@ ssh = ["paramiko[invoke]>=2.7.0"]
 # Remove the env marker if/when pyarrow is available for Python3.9
 hdfs = ["pyarrow>=2.0.0"]
 webhdfs = ["hdfs==2.5.8"]
-webdav = ["webdav4>=0.7.0"]
+webdav = ["webdav4>=0.8.1"]
 # gssapi should not be included in all_remotes, because it doesn't have wheels
 # for linux and mac, so it will fail to compile if user doesn't have all the
 # requirements, including kerberos itself. Once all the wheels are available,