message: nydus-test: disable case of files iostats
diff: import pytest
  -import tempfile
  from distributor import Distributor
  from rafs import Backend, NydusDaemon, RafsConf, RafsImage
  from workload_gen import WorkloadGen
  @@ -25,6 +24,7 @@ def test_daemon_info(nydus_anchor, nydus_image, rafs_conf: RafsConf):
  nc.get_wait_daemon()
  +@pytest.mark.skip(reason="The files metrics json body is too large")
  def test_iostats(
  nydus_anchor: NydusAnchor, nydus_image: RafsImage, rafs_conf: RafsConf
  ):
  