fix: set rep_crawler_weight_minimum config to track more representatives

[mistakia]

There are many reps that may not get tracked due to the default behavior of rep crawler which limits tracking to principal representatives.

Nodes can override this behavior through a config change (nanocurrency/nano-node#3531).

Hat tip to tipnano rep for bringing attention to this issue

[mistakia]

Testing out a minimum weight for rep crawler of 10,000 Nano

# Rep crawler minimum weight, if this is less than minimum principal weight then this is taken as the minimum weight a rep must have to be tracked. If you want to track all reps set this to 0. If you do not want this to influence anything then set it to max value. This is only useful for debugging or for people who really know what they are doing.
# type:string,amount,raw
rep_crawler_weight_minimum = "10000000000000000000000000000000000"