message: [json-rpc] change most log to debug level, change response log to trace level
  Closes:
diff: @@ -9,7 +9,7 @@ use crate::{
  };
  use futures::future::join_all;
  use libra_config::config::{NodeConfig, RoleType};
  -use libra_logger::{info, Level, Schema};
  +use libra_logger::{debug, Level, Schema};
  use libra_mempool::MempoolClientSender;
  use libra_types::{chain_id::ChainId, ledger_info::LedgerInfoWithSignatures};
  use rand::{rngs::OsRng, RngCore};
  @@ -58,7 +58,7 @@ struct RpcResponseLog<'a> {
  #[macro_export]
  macro_rules! log_response {
  ($trace_id: expr, $resp: expr, $is_batch: expr) => {
  - let mut level = Level::Debug;
  + let mut level = Level::Trace;
  if let Some(ref error) = $resp.error {
  if is_internal_error(&error.code) {
  level = Level::Error
  @@ -114,7 +114,7 @@ pub fn bootstrap(
  .and(warp::any().map(move || Arc::clone(&registry)))
  .and_then(rpc_endpoint)
  .with(warp::log::custom(|info| {
  - info!(HttpRequestLog {
  + debug!(HttpRequestLog {
  remote_addr: info.remote_addr(),
  method: info.method().to_string(),
  path: info.path().to_string(),
  @@ -203,7 +203,7 @@ async fn rpc_endpoint_without_metrics(
  let mut rng = OsRng;
  let trace_id = rng.next_u64();
  - info!(RpcRequestLog {
  + debug!(RpcRequestLog {
  trace_id,
  request: data.clone(),
  });
  