Move src/logger.rs into logger/ crate to unify logging across the workspace

fullnode-config/src/main.rs

@@ -7,14 +7,14 @@ use serde_json;
 use clap::{App, Arg};
 use solana::cluster_info::FULLNODE_PORT_RANGE;
 use solana::fullnode::Config;
-use solana::logger;
+
 use solana::netutil::{get_ip_addr, get_public_ip_addr, parse_port_or_addr};
 use solana_sdk::signature::{gen_pkcs8, read_pkcs8};
 use std::io;
 use std::net::SocketAddr;
 
 fn main() {
-    logger::setup();
+    solana_logger::setup();
     let matches = App::new("fullnode-config")
         .version(crate_version!())
         .arg(