[rosetta] Allow commission percentage to be adjustable

[gregnazario]

Description

Commission percentage was hardcoded to 0, this lets it be variable.

Test Plan

E2E test covers this, it's optional, so it won't do anything if not provided.

[github-actions]

✅ Forge suite compat success on testnet_2d8b1b57553d869190f61df1aaf7f31a8fc19a7b ==> 5beb5098719d478da04f85091c1ac9212ac7b4a2

Compatibility test results for testnet_2d8b1b57553d869190f61df1aaf7f31a8fc19a7b ==> 5beb5098719d478da04f85091c1ac9212ac7b4a2 (PR)
1. Check liveness of validators at old version: testnet_2d8b1b57553d869190f61df1aaf7f31a8fc19a7b
compatibility::simple-validator-upgrade::liveness-check : 7294 TPS, 5342 ms latency, 7300 ms p99 latency,no expired txns
2. Upgrading first Validator to new version: 5beb5098719d478da04f85091c1ac9212ac7b4a2
compatibility::simple-validator-upgrade::single-validator-upgrade : 4926 TPS, 8301 ms latency, 10400 ms p99 latency,no expired txns
3. Upgrading rest of first batch to new version: 5beb5098719d478da04f85091c1ac9212ac7b4a2
compatibility::simple-validator-upgrade::half-validator-upgrade : 4176 TPS, 9607 ms latency, 12600 ms p99 latency,no expired txns
4. upgrading second batch to new version: 5beb5098719d478da04f85091c1ac9212ac7b4a2
compatibility::simple-validator-upgrade::rest-validator-upgrade : 6651 TPS, 5906 ms latency, 12000 ms p99 latency,no expired txns
5. check swarm health
Compatibility test for testnet_2d8b1b57553d869190f61df1aaf7f31a8fc19a7b ==> 5beb5098719d478da04f85091c1ac9212ac7b4a2 passed
Test Ok

• Grafana dashboard
• Humio Logs
• Test runner output
• Test run is land-blocking

[github-actions]

✅ Forge suite land_blocking success on 5beb5098719d478da04f85091c1ac9212ac7b4a2

performance benchmark with full nodes : 6457 TPS, 6155 ms latency, 9000 ms p99 latency,(!) expired 260 out of 2757700 txns
Test Ok

• Grafana dashboard
• Humio Logs
• Test runner output
• Test run is land-blocking