Debug recovery minor updates

Aleksandra Porebarequested to merge
aporeba/athena:transform-flags into master

Few issues listed in ATR-22615 :

  • handle skipEvent and maxEvent flags
  • set maxEvent in debug recovery test
  • remove unused EventCounter histograms
  • don't set database server if useDB flag is not on
  • update debug recovery input file

Should fix ATR-22815

Tagging @mark

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