Remove Run 2 HLT luminosity line from master

This is related to Rec#395 (closed), as Run 2 HLT lumi line depends on LumiAlgs removed from Rec

added Luminosity legacy labels

created branch 477-remove-run-2-hlt-luminosity-line-from-master to address this issue

mentioned in merge request !1761 (merged)

created branch 477-remove-run-2-hlt-luminosity-line-from-master-2 to address this issue

closed with merge request !1761 (merged)

mentioned in commit 7ac09e0c