message: fix static path for find_cuda_config.py script
diff: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  +from pathlib import Path
  import argparse
  import errno
  @@ -1235,8 +1236,14 @@ def validate_cuda_config(environ_cp):
  if environ_cp.get('TF_NCCL_VERSION', None):
  cuda_libraries.append('nccl')
  + find_cuda_path = 'third_party/gpus/find_cuda_config.py'
  + if not Path(find_cuda_path).is_file():
  + find_cuda_path = Path().glob('**/third_party/gpus/find_cuda_config.py')
  + find_cuda_path = find_cuda_path.__next__()
  + assert find_cuda_path, "Can't find 'find_cuda_config.py' script"
  +
  proc = subprocess.Popen(
  - [environ_cp['PYTHON_BIN_PATH'], 'third_party/gpus/find_cuda_config.py'] +
  + [environ_cp['PYTHON_BIN_PATH'], find_cuda_path] +
  cuda_libraries,
  stdout=subprocess.PIPE,
  env=maybe_encode_env(environ_cp))
  