[RelEng] Create and update maintenance branches in release preparation#3261

HannesWell merged 1 commit intoeclipse-platform:mastereclipse-platform/eclipse.platform.releng.aggregator:masterfrom

HannesWell:create-maintanance-branch-in-preparationHannesWell/eclipse.platform.releng.aggregator:create-maintanance-branch-in-preparationCopy head branch name to clipboard