Repairing merging for truth derivations
We need certain metadata for reconstruction that (of course) does not exist in a truth derivation. This MR looks to see if we are merging truth derivations, and if we are, it disables some of the problematic items, and sets up the things we neeed. It is largely taken from PATJobTransforms/skeleton.AODtoDAOD_tf.py
Edited by Tadej Novak