message: Disable cluster_function_library_runtime_test on Mac OS as it is currently failing with an Unimplemented error
diff: @@ -121,6 +121,7 @@ tf_cc_test(
  name = "cluster_function_library_runtime_test",
  srcs = ["cluster_function_library_runtime_test.cc"],
  linkstatic = tf_kernel_tests_linkstatic(),
  + tags = ["nomac"],
  deps = [
  ":worker_session",
  "//tensorflow/core:framework_internal",
  