Allow custom algod consensus

[scholtz]

Summary

This pull request depends on

https://github.com/algorand/go-algorand-sdk/issues/754

https://github.com/algorand/go-algorand-sdk/pull/755

Test Plan

We built using https://github.com/scholtz/AlgorandNodes/blob/main/docker/indexer/aramidmain/aramid-conduit-1.9.0.sh

and test it on aramid chain directly