The bank-hash command in ledger-tool was recently deprecated. However,
the command is used by some of the scripts that coordinate starting up
a fresh cluster. So, the deprecation of bank-hash broke those scripts.
This change fixes the scripts by doing the following:
- Makes --print-bank-hash support --output json
- Updates scripts to install jq on provisioned nodes
- Update remote-node.sh to parse the bank hash from json using jq
steviez