[WIP] Vote cu

[ksolana]

Problem

Part of #3364

[ksolana]

Getting an error with cargo bench:

Err(Error { request: Some(GetMinimumBalanceForRentExemption), kind: Reqwest(reqwest::Error { kind: Request, url: Url { scheme: "http", cannot_be_a_base: false, username: "", password: None, host: Some(Ipv4(127.0.0.1)), port: Some(8899), path: "/", query: None, fragment: None }, source: hyper::Error(Connect, ConnectError("tcp connect error", Os { code: 61, kind: ConnectionRefused, message: "Connection refused" })) }) })