Remove `caller` from meta in the consensus step

[RaqManzano]

Description of feature

Originally, caller was used in meta during the consensus for the file names. This behavior changed because maintaining the order was unstable and causing some issues with the run. However, caller in meta now seems to be messing with -resume so needs to be removed.

TODO:
Think of strategies to do this safely and clean.

[RaqManzano]

In theory, the most straightforward fix would be:

• remove ,val(caller) from here, here and here.
• Add .map{meta, mafs, caller -> [meta, mafs]} to here and here.