fix: aws make the upload stream seekable

This is needed inside the aws cpp sdk as they default to hashing the
data if the connection is http. This results in itterating over the data
twice. This has worked so far because of retires. We made a similar fix
in OpenVDS.
32 jobs for jorgen.lind/aws_stream_fix in 16 minutes and 56 seconds (queued for 3 seconds)
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