Fix object storage uploads not working with AWS v2
Because we were passing query strings as symbols, the fog-aws storage
driver was omitting the uploadId
and partNumber
query strings
from the signature in multipart uploads. This fix makes Ceph and AWS work with
v2 signatures.
See: https://github.com/fog/fog-aws/blob/v3.0.0/lib/fog/aws/storage.rb#L733
Edited by Stan Hu