tor-hsservice: If the error is fatal, do not retry the desc upload.

This builds on top of !1812 (merged)

The errors returned by upload_all are now all fatal, so we there is no point in retrying upload_all on failure.

Note this will exacerbate #1155 (closed), as it will cause the seemingly transient time skew issues to become fatal (the corresponding error type is Bug, so in principle they ought to be fatal)