21.2-AnalysisTop: Updating to consolidated boosted jet tagging recommendations
requested to merge pjacka/athena:21.2-AnalysisTop-UpdateToTopTaggingSFConsolidatedRecommendations into 21.2
Adding a support for systematic uncertainties related with boosted jets tagging.
Scale factors variations are stored in the nominal tree only if they are independent of 4-momentum variations. Other variations are performed coherently with 4-momentum variations in systematic trees.