message: nydus-test: allow unpresent oss config
  We now generally use registry simlualter as storage backend.
  So oss related artifacts are not necessary
diff: @@ -66,9 +66,10 @@ class NydusAnchor:
  artifacts = kwargs.pop("artifacts")
  self.containerd_bin = artifacts["containerd"]
  - if artifacts["ossutil_bin"]:
  +
  + try:
  self.ossutil_bin = artifacts["ossutil_bin"]
  - else:
  + except KeyError:
  self.ossutil_bin = (
  "framework/bin/ossutil64.x86"
  if self.machine != "aarch64"
  @@ -81,11 +82,14 @@ class NydusAnchor:
  self.fs_version = kwargs.pop("fs_version", 6)
  + try:
  oss_conf = kwargs.pop("oss")
  self.oss_ak_id = oss_conf["ak_id"]
  self.oss_ak_secret = oss_conf["ak_secret"]
  self.oss_bucket = oss_conf["bucket"]
  self.oss_endpoint = oss_conf["endpoint"]
  + except KeyError:
  + pass
  self.logging_file_path = kwargs.pop("logging_file")
  self.logging_file = self.decide_logging_file()
  