make sure Tier0 processing is complete

[hufnagel]

Output of the Tier0 needs to be as complete as possible, either because otherwise we would have unrecoverable data loss (repack), we would get bad conditions for the reconstruction (express) or we would provide incomplete statistics for analysis (promptreco).

Due to the interconnected nature of the Tier0 workflows and/or the special latency requirements, the usual procedure to handle incomplete workflows via ACDC and retries is not useful. Definitely not for repack or express and even for promptreco it could cause problems with the integration with promptskimming.

What exactly will be needed to implement this depends on #3114

[samircury]

samir: #3114 is done and solves Repack+Express case. Also the T0 PromptReco and all other workflos, might want to discuss about the T1 PromptReco

[hufnagel]

hufnagel: Close this for now as #3114 adresses the problem for all Tie0internal workflows. If the issue comes up again later (for attached workflows at the Tieaab4516afee66cc6b5885807a471865f539a5003for instance), we can open a new ticket.