Allow to take into account grand parents in ClusterEfficiency algorithm

Use grandparents to allow selection of pi0 when running ClusterEfficiency.

This MR is required for a Moore MR Moore!1498 (merged) that implements new calo efficiency counters based on pi0.

The code was developed by @aszabels. I've rebased it on master and updated where needed.

added RTA label

mentioned in merge request Moore!1498 (merged)

changed the description

assigned to @thboettc

mentioned in issue Moore#421 (closed)

@conrad assign this to me when it is ready for testing with Moore!1498 (merged)

assigned to @conrad and unassigned @thboettc

• [2022-04-20 13:19] Validation started with lhcb-master-mr#4260

mentioned in commit Moore@64559e9e

mentioned in commit Alignment@96088c8e

mentioned in merge request Moore!1516 (merged)

mentioned in merge request Alignment!262 (closed)

added Calo MC checking enhancement labels

mentioned in commit Moore@c03fedb7

approved this merge request

merged

mentioned in commit 7bb8aa10

mentioned in commit Moore@caee0442

mentioned in issue Moore#426 (closed)