Some 3rd party services the MinIO SDK can connect
with do not return a checksum whenever a file is
uploaded. Before this change, this would lead to
an error, rendering it impossible to operate with
those 3rd party services. With this change, we'll
continue to verify checksums if they come through,
however we won't error out if they don't and the
PutObject call is successful.
Note: There are no new tests with this change as
this behaviour is not unit-testeable at the
moment. I suggest we could have end-to-end tests
for this.
Hugo