Add try-loop on report convert with soffice
We see a little bit too often conversion error with soffice headless.
This seems to be linked to available resource even if it is not always reproducible. I think this is due to the complex nature of soffice.
Any way, I think before skip conversion, we should try some tries before like we do for database operational issue.
I think if the changes are not too complicated, we should backport as it will improve reliability.