Make propagating of raw banks more explicit
Use algorithm which selects banks with a certain HltSourceID to more explicitly define which banks are propagated.
The goal was to make the code more clear. While this works for MDF input (and actually fixes that we can rerun Hlt2 on Hlt2 selected data), the way the raw event is handled when writing DST prevents simplifications and still requires a different code path.
Needs LHCb!4119 (merged)
Edited by Sascha Stahl