Force P2PV relation creation in HLT2
If a selection requires PVs, it is safe to assume the PV relations may be required offline to tighten any best-PV-related cuts. This MR forces P2PV relations to be created if a selection algorithm has PVs as input. By ensuring the PV relations tables are created, we ensure that the top-level relations contain entries for all intermediate objects.
The hlt2_check_output
test is extended to check that child relations are propagated to the output.
Closes #255 (closed). Required for MooreAnalysis!30 (merged).
Edited by Alex Pearce