[O2B-1423] Uniformize QC flags to use qc_time_start/qc_time_end#1867

martinboulais wants to merge 2 commits intomainAliceO2Group/Bookkeeping:mainfrom

mboulais/O2B-1423/uniformize-qc-flags-to-use-qc-time-start-qc-time-endAliceO2Group/Bookkeeping:mboulais/O2B-1423/uniformize-qc-flags-to-use-qc-time-start-qc-time-endCopy head branch name to clipboard