message: Import circle ci fix.
diff: @@ -30,7 +30,8 @@ export NUM_CPUS=6
  # CircleCI doesn't support IPv6 by default, so we run all tests with IPv4 only.
  # IPv6 tests are run with Azure Pipelines.
  -export BAZEL_EXTRA_BUILD_OPTIONS="--test_env=ENVOY_IP_TEST_VERSIONS=v4only --local_cpu_resources=${NUM_CPUS} \
  +export BAZEL_EXTRA_BUILD_OPTIONS="${BAZEL_BUILD_EXTRA_OPTIONS} \
  + --test_env=ENVOY_IP_TEST_VERSIONS=v4only --local_cpu_resources=${NUM_CPUS} \
  --action_env=HOME --action_env=PYTHONUSERBASE --test_env=HOME --test_env=PYTHONUSERBASE"
  function finish {
  