cli: add garage json-api command and fix cargo tests

src/garage/cli/remote/mod.rs

@@ -43,7 +43,7 @@ impl Cli {
 			Command::Meta(mo) => self.cmd_meta(mo).await,
 			Command::Stats(so) => self.cmd_stats(so).await,
 			Command::Repair(ro) => self.cmd_repair(ro).await,
-			Command::JsonApi { endpoint, payload } => self.json_api(endpoint, payload).await,
+			Command::JsonApi { endpoint, payload } => self.cmd_json_api(endpoint, payload).await,
 
 			_ => unreachable!(),
 		}
@@ -107,7 +107,7 @@ impl Cli {
 		Ok(resp.success.into_iter().next().unwrap().1)
 	}
 
-	pub async fn json_api(&self, endpoint: String, payload: String) -> Result<(), Error> {
+	pub async fn cmd_json_api(&self, endpoint: String, payload: String) -> Result<(), Error> {
 		use std::io::Read;
 
 		let payload_json = if payload == "-" {