message: smoke: use flexi-logger in smoke test too
  Because nydus has changed its logger to flexi-logger.
  smoke can't import the stderr logger crate anymore.
diff: // SPDX-License-Identifier: Apache-2.0
  #[macro_use]
  extern crate log;
  -extern crate stderrlog;
  mod builder;
  mod nydusd;
  @@ -13,7 +12,7 @@ use std::path::PathBuf;
  use vmm_sys_util::tempdir::TempDir;
  -use nydus_utils::{eother, exec};
  +use nydus_utils::{eother, exec, setup_logging};
  const COMPAT_BOOTSTRAPS: &'static [&'static str] = &[
  "blake3-lz4_block-non_repeatable",
  @@ -130,13 +129,8 @@ fn test(
  }
  #[test]
  -fn integration_test_init() -> Result<()> {
  - stderrlog::new()
  - .quiet(false)
  - .timestamp(stderrlog::Timestamp::Second)
  - .verbosity(log::LevelFilter::Trace as usize - 1)
  - .init()
  - .map_err(|e| eother!(e))
  +fn integration_test_init() {
  + setup_logging(None, log::LevelFilter::Trace).unwrap()
  }
  #[test]
  