CLI: Reinstate logging, disabled by default

(cherry picked from commit a44392048d)

cli/src/main.rs

@@ -245,6 +245,7 @@ pub fn parse_args<'a>(
 }
 
 fn main() -> Result<(), Box<dyn error::Error>> {
+    solana_logger::setup_with_default("off");
     let matches = app(
         crate_name!(),
         crate_description!(),